🔖 release: 1.2.1

Тег на зелёном коммите: в v1.2.0 проверки CI упали на порядке импортов. Кода релиз не меняет — правка уже в main отдельным коммитом. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
🚨 fix(lint): порядок импортов по конфигурации из корня репозитория
2026-10-05 17:14:59 +03:00 · 2026-09-12 03:36:56 +03:00 · 2026-09-12 03:20:50 +03:00 · 2026-09-12 03:12:18 +03:00 · 2026-09-10 00:37:21 +03:00 · 2026-09-10 00:36:52 +03:00
361 changed files with 12320 additions and 2956 deletions
@@ -20,7 +20,10 @@ test-results/
 .DS_Store

 # Перенесено из корневого .gitignore при переносе корня репозитория в code/chatballs
-data/
+# Тома docker-стенда (postgres, redis, caddy, media) — только в корне репозитория.
+# Без якоря правило ловило и demo_seed/data: русские манифесты в индексе уже
+# лежали, а новые файлы туда молча не попадали.
+/data/
 .env.bak-*
 **/staticfiles/

@@ -44,6 +44,17 @@ Engineering rules / обязательные практики:
 - Не инлайнить сложный UI повторно. Выносить компонент, если структура повторяется или секция имеет отдельную ответственность.
 - Если реализация по задаче конфликтует с этими правилами, остановиться и явно сообщить blocker вместо поставки плохой структуры.

+Язык интерфейса:
+- Текста, который видит человек, в коде не бывает. Строка живёт в словаре и подставляется через `t(...)`: во фронтенде это `src/i18n` приложения (`packages/ui` — свой словарь), на бэкенде `chatballs/i18n`. Русский каталог — источник ключей, английский обязан его повторить: пропущенный перевод во фронтенде ловит `tsc`, на бэкенде — тест каталога.
+- Ключ пишется от смысла, а не от фразы: `settings.storage_bucket_name`, а не пересказ текста. Строку переформулируют чаще, чем переименовывают.
+- Число не склоняют вручную: формы задаёт словарь, форму выбирает `tn(...)`. Дату, размер файла и разряды числа форматирует `fmt` — прибитые `"ru-RU"` и свои списки месяцев запрещены.
+- Что записано в базу, переводится по коду, а не текстом: системные события диалога, уведомления и подписи журнала аудита хранят код, а фразу собирает бэкенд на языке читателя. Писать в историю готовую русскую фразу нельзя — её потом не перевести.
+- Язык запроса выбирается цепочкой: профиль сотрудника → организация → установка → браузер. Письмо получает язык адресата, а не отправителя.
+- На бэкенде `t(...)` не вызывается на уровне модуля: язык там свой на каждый запрос, а константа посчиталась бы один раз при импорте.
+- Текст, уходящий наружу — клиенту в мессенджер, письмо, кнопку виджета, — берёт язык не запроса, а организации: `t(..., language=customer_language(organization))`. Язык оператора, нажавшего кнопку, к речи компании с её клиентом отношения не имеет, и половина такого текста вообще рождается в воркере, где запроса нет.
+- Системный промпт агента не переводится: его читает модель. Язык ответа задаёт отдельная директива по полю `AIAgent.answer_language` — по умолчанию «как у клиента».
+- Демо-набор ставится на языке организации: манифесты лежат в `demo_seed/data/<язык>/`, наборы ключей в них совпадают. Бинарные вложения (аватары, голосовые) общие, текстовые документы — свои на каждый язык.
+
 Definition of Done:
 - Запускать только тесты, относящиеся к изменениям текущей итерации. Полный прогон всех тестов выполнять только по явному указанию владельца.
 - Измененные файлы должны быть проверены на NO GOD violations.
@@ -0,0 +1,661 @@
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+
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+
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+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Remote Network Interaction; Use with the GNU General Public License.
+
+  Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
+interacting with it remotely through a computer network (if your version
+supports such interaction) an opportunity to receive the Corresponding
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+means of facilitating copying of software.  This Corresponding Source
+shall include the Corresponding Source for any work covered by version 3
+of the GNU General Public License that is incorporated pursuant to the
+following paragraph.
+
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+permission to link or combine any covered work with a work licensed
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+License will continue to apply to the part which is the covered work,
+but the work with which it is combined will remain governed by version
+3 of the GNU General Public License.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero General Public License from time to time.  Such new versions
+will be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU Affero General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU Affero General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
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+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
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+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
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+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<https://www.gnu.org/licenses/>.
@@ -18,6 +18,7 @@
  <img alt="Self-hosted" src="https://img.shields.io/badge/self--hosted-one%20command-1677ff">
  <img alt="Docker Compose" src="https://img.shields.io/badge/docker-compose-2496ED?logo=docker&logoColor=white">
  <img alt="Bring your own model" src="https://img.shields.io/badge/AI-bring%20your%20own%20model-6f42c1">
+  <img alt="License: AGPL-3.0" src="https://img.shields.io/badge/license-AGPL--3.0-blue">
 </p>

 ---
@@ -36,6 +37,7 @@
  - [Updating](#updating)
 - [Features](#features)
 - [Troubleshooting](#troubleshooting)
+- [License](#license)

 ---

@@ -321,3 +323,9 @@ Copy the `chatballs-postgres`, `chatballs-media` and `chatballs-secrets` volumes
 docker compose exec -T postgres pg_dump -U chatballs_bootstrap chatballs > backup.sql
 ```
 </details>
+
+---
+
+## License
+
+Chatballs is distributed under the [GNU Affero General Public License v3.0](LICENSE). You may use, modify and self-host it freely. If you modify it and offer it to others as a service, you must publish your changes under the same license.
@@ -18,6 +18,7 @@
  <img alt="Self-hosted" src="https://img.shields.io/badge/self--hosted-one%20command-1677ff">
  <img alt="Docker Compose" src="https://img.shields.io/badge/docker-compose-2496ED?logo=docker&logoColor=white">
  <img alt="Bring your own model" src="https://img.shields.io/badge/AI-bring%20your%20own%20model-6f42c1">
+  <img alt="License: AGPL-3.0" src="https://img.shields.io/badge/license-AGPL--3.0-blue">
 </p>

 ---
@@ -36,6 +37,7 @@
  - [Обновление](#обновление)
 - [Функции](#функции)
 - [Решение проблем](#решение-проблем)
+- [Лицензия](#лицензия)

 ---

@@ -321,3 +323,9 @@ docker compose ps
 docker compose exec -T postgres pg_dump -U chatballs_bootstrap chatballs > backup.sql
 ```
 </details>
+
+---
+
+## Лицензия
+
+Chatballs распространяется по лицензии [GNU Affero General Public License v3.0](LICENSE). Продукт можно свободно использовать, менять и ставить у себя. Если вы меняете его и предоставляете другим как сервис, изменения нужно опубликовать под той же лицензией.
@@ -1 +1 @@
-1.0.0
+1.2.1
@@ -19,6 +19,7 @@ from chatballs.ai.agent_knowledge import (
 from chatballs.ai.knowledge_policy import readable_knowledge
 from chatballs.ai.models import AIAgent, Knowledge
 from chatballs.channels.models import Channel
+from chatballs.i18n import t
 from chatballs.support_portals.models import PortalArticle
 from chatballs.tenancy.context import TenantContext

@@ -37,17 +38,17 @@ def normalized_ids(raw_ids: Iterable[int], field: str) -> list[int]:
    normalized: list[int] = []
    for value in raw_ids:
        if isinstance(value, bool) or not isinstance(value, int) or value <= 0:
-            raise ValidationError({field: "Positive integer ID required"})
+            raise ValidationError({field: t("api.positive_id_required")})
        if value not in normalized:
            normalized.append(value)
    if not normalized:
-        raise ValidationError({field: "At least one ID is required"})
+        raise ValidationError({field: t("api.at_least_one_id")})
    return normalized


 def _locked_agent(*, context: TenantContext, agent: AIAgent) -> tuple[AIAgent, Channel]:
    if agent.channel.organization_id != context.organization_id:
-        raise ValidationError({"agent": "Agent belongs to another organization"})
+        raise ValidationError({"agent": t("ai.agent_other_organization")})
    channel = Channel.objects.select_for_update().get(
        id=agent.channel_id,
        organization_id=context.organization_id,
@@ -99,7 +100,7 @@ def link_knowledge_to_agent(
    )
    found_ids = set(readable.values_list("id", flat=True))
    if len(found_ids) != len(requested_ids):
-        raise ValidationError({"knowledgeIds": "Unknown knowledge item"})
+        raise ValidationError({"knowledgeIds": t("ai.unknown_knowledge_item")})
    available_ids = set(
        knowledge_available_to_channel(
            Knowledge.objects.filter(id__in=found_ids),
@@ -130,7 +131,7 @@ def link_portal_articles_to_agent(
    )
    found_ids = set(articles.values_list("id", flat=True))
    if len(found_ids) != len(requested_ids):
-        raise ValidationError({"articleIds": "Unknown portal article"})
+        raise ValidationError({"articleIds": t("ai.unknown_portal_article")})
    available_ids = set(
        portal_articles_available_to_channel(
            PortalArticle.objects.filter(id__in=found_ids),
@@ -12,7 +12,7 @@ from django.db import transaction
 from django.db.models import Case, Count, IntegerField, Q, QuerySet, Value, When
 from django.utils.text import slugify

-from chatballs.ai.models import AIAgent, AIAgentStatus
+from chatballs.ai.models import AIAgent, AIAgentStatus, AnswerLanguage
 from chatballs.ai.serializers import agent_portal_article_payload
 from chatballs.channels.models import Channel
 from chatballs.channels.services import (
@@ -22,6 +22,7 @@ from chatballs.channels.services import (
    update_channel,
 )
 from chatballs.conversations.models import LifecycleState
+from chatballs.i18n import normalize_language, t
 from chatballs.tenancy.context import TenantContext


@@ -128,6 +129,7 @@ def agent_card_payload(channel: Channel, *, knowledge_total: int | None = None)
        "providerIntegrationId": agent.provider_integration_id,
        "modelParams": agent.model_params,
        "limits": agent.limits,
+        "answerLanguage": agent.answer_language,
        "persona": agent.persona,
        "tone": agent.tone,
        "instructions": agent.instructions,
@@ -170,7 +172,7 @@ def _unique_agent_code(organization_id: int, name: str) -> str:
        candidate = f"{base}-{suffix}"
        if candidate not in taken:
            return candidate
-    raise ValidationError({"name": "Не удалось подобрать уникальный код агента"})
+    raise ValidationError({"name": t("ai.agent_code_collision")})


 def ensure_channel_agent(channel: Channel) -> AIAgent:
@@ -200,7 +202,7 @@ def create_agent_card(
    from chatballs.channels import authorization
    from chatballs.channels.services import _clean_name, _group_for_channel

-    authorization.require_organization_manage(context, operation="Создание агента")
+    authorization.require_organization_manage(context, operation="channels.operation_agent_create")
    clean_name = _clean_name(name)
    group = _group_for_channel(context=context, group_id=group_id)
    channel = Channel.objects.create(
@@ -234,6 +236,7 @@ def update_agent_card(
        "persona",
        "tone",
        "instructions",
+        "answerLanguage",
        "knowledgeIds",
    }
    if ai_fields & set(body):
@@ -244,20 +247,20 @@ def update_agent_card(
            not isinstance(knowledge_ids, list)
            or not all(isinstance(item, int) for item in knowledge_ids)
        ):
-            raise ValidationError({"knowledgeIds": "List of ids required"})
+            raise ValidationError({"knowledgeIds": t("api.list_of_ids_required")})
        model_params = body.get("modelParams", agent.model_params)
        limits = body.get("limits", agent.limits)
        if not isinstance(model_params, dict):
-            raise ValidationError({"modelParams": "Object required"})
+            raise ValidationError({"modelParams": t("api.object_required")})
        if not isinstance(limits, dict):
-            raise ValidationError({"limits": "Object required"})
+            raise ValidationError({"limits": t("api.object_required")})
        provider_integration_id = body.get(
            "providerIntegrationId", agent.provider_integration_id
        )
        if provider_integration_id is not None and not isinstance(
            provider_integration_id, int
        ):
-            raise ValidationError({"providerIntegrationId": "Integer id required"})
+            raise ValidationError({"providerIntegrationId": t("api.integer_id_required")})
        update_agent(
            context=context,
            agent=agent,
@@ -271,6 +274,9 @@ def update_agent_card(
                persona=str(body.get("persona", agent.persona)),
                tone=str(body.get("tone", agent.tone)),
                instructions=str(body.get("instructions", agent.instructions)),
+                answer_language=_clean_answer_language(
+                    body.get("answerLanguage", agent.answer_language)
+                ),
                knowledge_ids=knowledge_ids,
            ),
        )
@@ -280,6 +286,18 @@ def update_agent_card(
    return agent_card_for_context(context=context, agent_id=channel.id)


+def _clean_answer_language(value: object) -> str:
+    """Режим ответа агента: MIRROR, ORGANIZATION или код поддерживаемого языка."""
+
+    raw = str(value or "").strip()
+    if raw in AnswerLanguage.values:
+        return raw
+    code = normalize_language(raw)
+    if code:
+        return code
+    raise ValidationError({"answerLanguage": t("ai.unknown_answer_language")})
+
+
 def agent_deletion_blockers(channel: Channel) -> list[dict[str, object]]:
    """Агент удаляется вместе с каналом; блокируют только внешние связи."""
    counts = (
@@ -295,7 +313,7 @@ def delete_agent_card(*, context: TenantContext, channel: Channel) -> None:
    from chatballs.channels import authorization
    from chatballs.channels.services import ChannelHasReferences

-    authorization.require_organization_manage(context, operation="Удаление агента")
+    authorization.require_organization_manage(context, operation="channels.operation_agent_delete")
    blockers = agent_deletion_blockers(channel)
    if blockers:
        raise ChannelHasReferences(blockers)
@@ -24,9 +24,14 @@ from chatballs.channels import services as channel_services
 from chatballs.channels.models import Channel
 from chatballs.channels.runtime import run_channel_turn
 from chatballs.channels.selectors import channel_for_context
+from chatballs.i18n import t
 from chatballs.identity.audit import record_audit_event

-AGENT_NOT_FOUND = {"detail": "Агент не найден"}
+
+# Функция, а не константа: язык у каждого запроса свой, а константа собралась бы
+# один раз при импорте — на языке, который случайно стоял в тот момент.
+def agent_not_found() -> dict[str, str]:
+    return {"detail": t("ai.agent_not_found")}


 def _validation_detail(error: ValidationError) -> str:
@@ -105,7 +110,7 @@ class AgentCardListView(APIView):
            try:
                cards = cards.filter(group_id=int(group))
            except ValueError:
-                return Response({"detail": "group must be an id or none"}, status=400)
+                return Response({"detail": t("ai.group_id_or_none")}, status=400)
        from chatballs.ai.agent_card import (
            ensure_channel_agent,
            knowledge_total_for_organization,
@@ -130,7 +135,7 @@ class AgentCardListView(APIView):
        if group_id is not None and (
            isinstance(group_id, bool) or not isinstance(group_id, int)
        ):
-            return Response({"detail": "groupId must be an integer or null"}, status=400)
+            return Response({"detail": t("ai.group_id_integer_or_null")}, status=400)
        try:
            channel = create_agent_card(
                context=request.tenant_context,
@@ -157,7 +162,7 @@ class AgentCardDetailView(APIView):
        try:
            channel = _load(request, agent_id)
        except Channel.DoesNotExist:
-            return Response(AGENT_NOT_FOUND, status=404)
+            return Response(agent_not_found(), status=404)
        from chatballs.ai.agent_card import ensure_channel_agent

        ensure_channel_agent(channel)
@@ -167,7 +172,7 @@ class AgentCardDetailView(APIView):
        try:
            channel = _load(request, agent_id)
        except Channel.DoesNotExist:
-            return Response(AGENT_NOT_FOUND, status=404)
+            return Response(agent_not_found(), status=404)
        body = request.data if isinstance(request.data, dict) else {}
        try:
            channel = update_agent_card(
@@ -182,7 +187,7 @@ class AgentCardDetailView(APIView):
        try:
            channel = _load(request, agent_id)
        except Channel.DoesNotExist:
-            return Response(AGENT_NOT_FOUND, status=404)
+            return Response(agent_not_found(), status=404)
        name = channel.name
        try:
            delete_agent_card(context=request.tenant_context, channel=channel)
@@ -201,7 +206,7 @@ class _AgentCardStatusView(APIView):
        try:
            channel = _load(request, agent_id)
        except Channel.DoesNotExist:
-            return Response(AGENT_NOT_FOUND, status=404)
+            return Response(agent_not_found(), status=404)
        try:
            channel = set_agent_card_active(
                context=request.tenant_context,
@@ -234,17 +239,17 @@ class AgentCardTestChatView(APIView):
                capability="ai.view",
            )
        except Channel.DoesNotExist:
-            return Response(AGENT_NOT_FOUND, status=404)
+            return Response(agent_not_found(), status=404)
        message = str(request.data.get("message", "")).strip()
        if not message:
-            return Response({"detail": "Пустое сообщение"}, status=400)
+            return Response({"detail": t("ai.empty_message")}, status=400)
        history = request.data.get("history") or []
        if not isinstance(history, list):
-            return Response({"detail": "history must be a list"}, status=400)
+            return Response({"detail": t("ai.history_must_be_list")}, status=400)
        try:
            result = run_channel_turn(channel=channel, message=message, history=history)
        except ProviderError as error:
-            return Response({"detail": f"Ошибка провайдера: {error}"}, status=502)
+            return Response({"detail": t("ai.provider_error", error=error)}, status=502)
        return Response(
            {
                "reply": result.text,
@@ -263,11 +268,11 @@ class AgentCardConnectionsView(APIView):
        try:
            channel = _load(request, agent_id)
        except Channel.DoesNotExist:
-            return Response(AGENT_NOT_FOUND, status=404)
+            return Response(agent_not_found(), status=404)
        data = request.data if isinstance(request.data, dict) else {}
        integration_id = data.get("integrationId")
        if isinstance(integration_id, bool) or not isinstance(integration_id, int):
-            return Response({"detail": "integrationId must be an integer"}, status=400)
+            return Response({"detail": t("ai.integration_id_integer")}, status=400)
        try:
            integration, previous_channel_id = channel_services.bind_connection(
                context=request.tenant_context,
@@ -305,7 +310,7 @@ class AgentCardConnectionDetailView(APIView):
        try:
            channel = _load(request, agent_id)
        except Channel.DoesNotExist:
-            return Response(AGENT_NOT_FOUND, status=404)
+            return Response(agent_not_found(), status=404)
        try:
            channel_services.unbind_connection(
                context=request.tenant_context,
@@ -16,19 +16,20 @@ from chatballs.ai.knowledge_bulk import (
 from chatballs.ai.models import AIAgent
 from chatballs.ai.selectors import agent_for_employee
 from chatballs.api.permissions import HasCapability
+from chatballs.i18n import t
 from chatballs.identity.audit import record_audit_event


 def _positive_id(value: object, field: str) -> int:
    if isinstance(value, bool) or not isinstance(value, int) or value <= 0:
-        raise ValidationError({field: "Positive integer ID required"})
+        raise ValidationError({field: t("api.positive_id_required")})
    return value


 def _knowledge_ids(body: dict[str, object]) -> list[int]:
    raw_ids = body.get("knowledgeIds")
    if not isinstance(raw_ids, list):
-        raise ValidationError({"knowledgeIds": "List of knowledge IDs required"})
+        raise ValidationError({"knowledgeIds": t("ai.list_of_knowledge_ids")})
    return [_positive_id(item, "knowledgeIds") for item in raw_ids]


@@ -68,7 +69,7 @@ class KnowledgeBulkMoveView(_KnowledgeBulkView):
 def _attach_action(body: dict[str, object]) -> bool:
    action = str(body.get("action", "attach"))
    if action not in {"attach", "detach"}:
-        raise ValidationError({"action": "Expected attach or detach"})
+        raise ValidationError({"action": t("ai.expected_attach_or_detach")})
    return action == "attach"


@@ -91,7 +92,7 @@ class _AgentLinkView(APIView):
            agent_id = _positive_id(request.data.get("agentId"), "agentId")
            raw_ids = request.data.get(self.id_field)
            if not isinstance(raw_ids, list):
-                raise ValidationError({self.id_field: "List of IDs required"})
+                raise ValidationError({self.id_field: t("ai.list_of_ids")})
            ids = [_positive_id(item, self.id_field) for item in raw_ids]
            attach = _attach_action(request.data)
        except ValidationError as error:
@@ -103,7 +104,7 @@ class _AgentLinkView(APIView):
                capability="ai.manage",
            )
        except AIAgent.DoesNotExist:
-            return Response({"detail": "Agent not found"}, status=404)
+            return Response({"detail": t("ai.agent_not_found")}, status=404)
        try:
            result = self.link(request, agent, ids, attach)
        except ValidationError as error:
@@ -171,7 +172,7 @@ class AgentCategoryKnowledgeSelectView(APIView):
                capability="ai.manage",
            )
        except AIAgent.DoesNotExist:
-            return Response({"detail": "Agent not found"}, status=404)
+            return Response({"detail": t("ai.agent_not_found")}, status=404)
        try:
            category_id = _positive_id(request.data.get("categoryId"), "categoryId")
            result = add_category_knowledge_to_agent(
@@ -14,16 +14,17 @@ from chatballs.ai.models import KnowledgeCategory
 from chatballs.ai.selectors import category_tree_for_employee
 from chatballs.ai.serializers import category_payload
 from chatballs.api.permissions import HasCapability
+from chatballs.i18n import t
 from chatballs.identity.audit import record_audit_event


 def _integer(value: object, field: str) -> int:
    if isinstance(value, bool):
-        raise ValidationError({field: "Integer required"})
+        raise ValidationError({field: t("api.integer_required")})
    try:
        return int(value)
    except (TypeError, ValueError) as error:
-        raise ValidationError({field: "Integer required"}) from error
+        raise ValidationError({field: t("api.integer_required")}) from error


 def _category(request: Request, category_id: int) -> KnowledgeCategory:
@@ -42,7 +43,7 @@ def _parent(
    try:
        return _category(request, parent_id)
    except KnowledgeCategory.DoesNotExist as error:
-        raise ValidationError({"parentId": "Parent category not found"}) from error
+        raise ValidationError({"parentId": t("ai.parent_category_not_found")}) from error


 def _audit(
@@ -110,7 +111,7 @@ class KnowledgeCategoryDetailView(APIView):
            require_category_manage(context=request.tenant_context)
            category = _category(request, category_id)
        except KnowledgeCategory.DoesNotExist:
-            return Response({"detail": "Category not found"}, status=404)
+            return Response({"detail": t("ai.category_not_found")}, status=404)
        try:
            parent = (
                _parent(request, request.data.get("parentId"), field_present=True)
@@ -136,7 +137,7 @@ class KnowledgeCategoryDetailView(APIView):
            require_category_manage(context=request.tenant_context)
            category = _category(request, category_id)
        except KnowledgeCategory.DoesNotExist:
-            return Response({"detail": "Category not found"}, status=404)
+            return Response({"detail": t("ai.category_not_found")}, status=404)
        try:
            deleted_id = category.id
            delete_category(context=request.tenant_context, category=category)
@@ -4,17 +4,18 @@ from rest_framework.request import Request
 from chatballs.ai.knowledge_services import KnowledgeInput
 from chatballs.ai.models import Knowledge
 from chatballs.ai.selectors import KnowledgeFilters
+from chatballs.i18n import t


 def _positive_id(value: object, field: str) -> int:
    if isinstance(value, bool):
-        raise ValidationError({field: "Positive integer id required"})
+        raise ValidationError({field: t("api.positive_id_required")})
    try:
        parsed = int(value)
    except (TypeError, ValueError) as error:
-        raise ValidationError({field: "Integer id required"}) from error
+        raise ValidationError({field: t("api.integer_id_required")}) from error
    if parsed <= 0:
-        raise ValidationError({field: "Positive integer id required"})
+        raise ValidationError({field: t("api.positive_id_required")})
    return parsed


@@ -38,7 +39,7 @@ def knowledge_input(
 ) -> KnowledgeInput:
    raw_enabled = body.get("isEnabled", current.is_enabled if current else True)
    if not isinstance(raw_enabled, bool):
-        raise ValidationError({"isEnabled": "Boolean required"})
+        raise ValidationError({"isEnabled": t("api.boolean_required")})
    return KnowledgeInput(
        title=str(body.get("title", current.title if current else "")),
        description=str(
@@ -59,7 +60,7 @@ def knowledge_filters(request: Request) -> KnowledgeFilters:
    elif raw_enabled.lower() == "false":
        is_enabled = False
    else:
-        raise ValidationError({"isEnabled": "Boolean required"})
+        raise ValidationError({"isEnabled": t("api.boolean_required")})
    agents = tuple(
        int(value) for value in request.query_params.getlist("agent") if value.isdigit()
    )
@@ -14,6 +14,7 @@ from chatballs.ai.models import (
 )
 from chatballs.ai.services import knowledge_for_agent_ids
 from chatballs.channels.models import Channel
+from chatballs.i18n import t
 from chatballs.tenancy.context import TenantContext


@@ -21,11 +22,11 @@ def _normalized_knowledge_ids(knowledge_ids: Iterable[int]) -> list[int]:
    normalized: list[int] = []
    for knowledge_id in knowledge_ids:
        if isinstance(knowledge_id, bool) or not isinstance(knowledge_id, int):
-            raise ValidationError({"knowledgeIds": "Knowledge IDs must be integers"})
+            raise ValidationError({"knowledgeIds": t("ai.knowledge_ids_integers")})
        if knowledge_id not in normalized:
            normalized.append(knowledge_id)
    if not normalized:
-        raise ValidationError({"knowledgeIds": "At least one knowledge ID is required"})
+        raise ValidationError({"knowledgeIds": t("ai.at_least_one_knowledge_id")})
    return normalized


@@ -40,7 +41,7 @@ def _locked_knowledge(*, context: TenantContext, knowledge_ids: Iterable[int]) -
        .order_by("id")
    )
    if len(items) != len(normalized_ids):
-        raise ValidationError({"knowledgeIds": "Unknown knowledge item"})
+        raise ValidationError({"knowledgeIds": t("ai.unknown_knowledge_item")})
    return items


@@ -64,7 +65,7 @@ def bulk_move_knowledge(
            organization_id=context.organization_id,
        )
    except KnowledgeCategory.DoesNotExist as error:
-        raise ValidationError({"categoryId": "Category not found"}) from error
+        raise ValidationError({"categoryId": t("ai.category_not_found")}) from error
    items = _locked_knowledge(context=context, knowledge_ids=knowledge_ids)
    _require_bulk_write(context=context, items=items)
    now = timezone.now()
@@ -87,7 +88,7 @@ def add_category_knowledge_to_agent(
    *, context: TenantContext, agent: AIAgent, category_id: int
 ) -> CategorySelectionResult:
    if agent.channel.organization_id != context.organization_id:
-        raise ValidationError({"agent": "Agent belongs to another organization"})
+        raise ValidationError({"agent": t("ai.agent_other_organization")})
    channel = Channel.objects.select_for_update().get(
        id=agent.channel_id,
        organization_id=context.organization_id,
@@ -96,7 +97,7 @@ def add_category_knowledge_to_agent(
        id=category_id,
        organization_id=context.organization_id,
    ).exists():
-        raise ValidationError({"categoryId": "Category not found"})
+        raise ValidationError({"categoryId": t("ai.category_not_found")})

    current_ids = set(agent.knowledge_items.values_list("id", flat=True))
    category_ids = set(
@@ -3,6 +3,7 @@ from django.db import transaction

 from chatballs.ai.knowledge_types import UNCATEGORIZED_CATEGORY_NAME
 from chatballs.ai.models import KnowledgeCategory
+from chatballs.i18n import t
 from chatballs.identity.models import Organization
 from chatballs.tenancy.context import TenantContext

@@ -24,14 +25,14 @@ def _validate_category_context(
    *, context: TenantContext, category: KnowledgeCategory
 ) -> None:
    if category.organization_id != context.organization_id:
-        raise ValidationError({"category": "Category belongs to another organization"})
+        raise ValidationError({"category": t("ai.category_other_organization")})


 def _validate_parent(
    *, context: TenantContext, parent: KnowledgeCategory | None
 ) -> None:
    if parent is not None and parent.organization_id != context.organization_id:
-        raise ValidationError({"parent": "Parent category belongs to another organization"})
+        raise ValidationError({"parent": t("ai.parent_category_other_organization")})


@transaction.atomic
@@ -57,7 +58,7 @@ def rename_category(
 ) -> KnowledgeCategory:
    _validate_category_context(context=context, category=category)
    if category.is_system:
-        raise ValidationError({"category": "System category is immutable"})
+        raise ValidationError({"category": t("ai.system_category_immutable")})
    locked = KnowledgeCategory.objects.select_for_update().get(pk=category.pk)
    locked.name = name
    locked.save(update_fields=["name"])
@@ -75,7 +76,7 @@ def move_category(
    _validate_category_context(context=context, category=category)
    _validate_parent(context=context, parent=parent)
    if category.is_system:
-        raise ValidationError({"category": "System category is immutable"})
+        raise ValidationError({"category": t("ai.system_category_immutable")})
    locked_categories = {
        item.pk: item
        for item in KnowledgeCategory.objects.select_for_update().filter(
@@ -104,7 +105,7 @@ def update_category(
    _validate_category_context(context=context, category=category)
    _validate_parent(context=context, parent=parent)
    if category.is_system:
-        raise ValidationError({"category": "System category is immutable"})
+        raise ValidationError({"category": t("ai.system_category_immutable")})
    locked_categories = {
        item.pk: item
        for item in KnowledgeCategory.objects.select_for_update().filter(
@@ -13,6 +13,7 @@ from chatballs.ai.knowledge_services import (
    update_knowledge,
 )
 from chatballs.ai.models import Knowledge, KnowledgeCategory
+from chatballs.i18n import t
 from chatballs.tenancy.context import TenantContext


@@ -35,14 +36,14 @@ class KnowledgeImportResult:
 def _title(document: dict[str, object]) -> str:
    value = document.get("title")
    if not isinstance(value, str) or not value.strip():
-        raise ValidationError({"title": "Title is required"})
+        raise ValidationError({"title": t("ai.title_required")})
    return value.strip()


 def _content(document: dict[str, object]) -> str:
    value = document.get("content")
    if not isinstance(value, str):
-        raise ValidationError({"content": "Content string is required"})
+        raise ValidationError({"content": t("ai.content_required")})
    return value


@@ -53,18 +54,18 @@ def _description(document: dict[str, object], *, default: str) -> str:
    if value is None:
        return ""
    if not isinstance(value, str):
-        raise ValidationError({"description": "Description must be a string"})
+        raise ValidationError({"description": t("ai.description_string")})
    return value.strip()


 def _category_for_path(*, context: TenantContext, raw_path: object) -> KnowledgeCategory:
    if not isinstance(raw_path, list) or not raw_path:
-        raise ValidationError({"categoryPath": "Non-empty category path required"})
+        raise ValidationError({"categoryPath": t("ai.category_path_required")})
    parent_id = None
    category = None
    for raw_name in raw_path:
        if not isinstance(raw_name, str) or not raw_name.strip():
-            raise ValidationError({"categoryPath": "Category names must be non-empty strings"})
+            raise ValidationError({"categoryPath": t("ai.category_names_strings")})
        try:
            category = KnowledgeCategory.objects.get(
                organization_id=context.organization_id,
@@ -72,7 +73,7 @@ def _category_for_path(*, context: TenantContext, raw_path: object) -> Knowledge
                name=raw_name.strip(),
            )
        except KnowledgeCategory.DoesNotExist as error:
-            raise ValidationError({"categoryPath": "Category path not found"}) from error
+            raise ValidationError({"categoryPath": t("ai.category_path_not_found")}) from error
        parent_id = category.id
    assert category is not None
    return category
@@ -153,7 +154,7 @@ def import_knowledge_documents(
            title = raw_title.strip() if isinstance(raw_title, str) else ""
        try:
            if not isinstance(raw_document, dict):
-                raise ValidationError({"document": "Document must be an object"})
+                raise ValidationError({"document": t("ai.document_object_required")})
            outcome = _import_document(context=context, document=raw_document)
        except ValidationError as error:
            result.failed.append({"title": title, "detail": _validation_detail(error)})
@@ -2,6 +2,7 @@ from django.core.exceptions import ValidationError
 from django.db import models

 from chatballs.ai.knowledge_types import UNCATEGORIZED_CATEGORY_NAME
+from chatballs.i18n import t
 from chatballs.tenancy.models import TenantRelationModel


@@ -42,23 +43,23 @@ class KnowledgeCategory(TenantRelationModel):
        super().clean()
        self.name = self.name.strip()
        if not self.name:
-            raise ValidationError({"name": "Category name is required"})
+            raise ValidationError({"name": t("ai.category_name_required")})
        persisted = None
        if self.pk is not None:
            persisted = type(self).objects.filter(pk=self.pk).values("is_system").first()
        if persisted and persisted["is_system"] and not self.is_system:
-            raise ValidationError({"category": "System category is immutable"})
+            raise ValidationError({"category": t("ai.system_category_immutable")})
        if self.is_system and self.name != UNCATEGORIZED_CATEGORY_NAME:
-            raise ValidationError({"name": "System category name is immutable"})
+            raise ValidationError({"name": t("ai.system_category_name_immutable")})

        ancestor = self.parent
        visited: set[int] = set()
        while ancestor is not None:
            if self.pk is not None and ancestor.pk == self.pk:
-                raise ValidationError({"parent": "Category cycle is not allowed"})
+                raise ValidationError({"parent": t("ai.category_cycle")})
            if ancestor.pk is not None:
                if ancestor.pk in visited:
-                    raise ValidationError({"parent": "Category cycle is not allowed"})
+                    raise ValidationError({"parent": t("ai.category_cycle")})
                visited.add(ancestor.pk)
            ancestor = ancestor.parent

@@ -68,11 +69,11 @@ class KnowledgeCategory(TenantRelationModel):

    def delete(self, *args: object, **kwargs: object):
        if self.is_system:
-            raise ValidationError({"category": "System category cannot be deleted"})
+            raise ValidationError({"category": t("ai.system_category_undeletable")})
        if self.children.exists():
-            raise ValidationError({"category": "Category with children cannot be deleted"})
+            raise ValidationError({"category": t("ai.category_with_children")})
        if self.knowledge_items.exists():
-            raise ValidationError({"category": "Category with knowledge cannot be deleted"})
+            raise ValidationError({"category": t("ai.category_with_knowledge")})
        return super().delete(*args, **kwargs)

    def __str__(self) -> str:
@@ -12,6 +12,7 @@ from chatballs.ai.models import (
    KnowledgeAttachment,
    KnowledgeCategory,
 )
+from chatballs.i18n import t
 from chatballs.tenancy.context import TenantContext
 from chatballs.tenancy.storage import adjust_storage_usage
 from chatballs.tenancy.storage_quota import (
@@ -39,13 +40,13 @@ def _knowledge_category(*, context: TenantContext, category_id: int | None) -> K
            id=category_id,
        )
    except KnowledgeCategory.DoesNotExist as error:
-        raise ValidationError({"category": "Category not found"}) from error
+        raise ValidationError({"category": t("ai.category_not_found")}) from error


@transaction.atomic
 def create_knowledge(*, context: TenantContext, data: KnowledgeInput) -> Knowledge:
    if not data.title.strip():
-        raise ValidationError({"title": "Title is required"})
+        raise ValidationError({"title": t("ai.title_required")})
    knowledge = Knowledge.objects.create(
        organization=context.organization,
        category=_knowledge_category(context=context, category_id=data.category_id),
@@ -63,9 +64,9 @@ def update_knowledge(
    *, context: TenantContext, knowledge: Knowledge, data: KnowledgeInput
 ) -> Knowledge:
    if knowledge.organization_id != context.organization_id:
-        raise ValidationError({"knowledge": "Knowledge belongs to another organization"})
+        raise ValidationError({"knowledge": t("ai.knowledge_other_organization")})
    if not data.title.strip():
-        raise ValidationError({"title": "Title is required"})
+        raise ValidationError({"title": t("ai.title_required")})
    locked = Knowledge.objects.select_for_update().get(pk=knowledge.pk)
    content_changed = locked.content != data.content
    locked.title = data.title.strip()
@@ -94,7 +95,7 @@ def update_knowledge(

 def delete_knowledge(*, context: TenantContext, knowledge: Knowledge) -> None:
    if knowledge.organization_id != context.organization_id:
-        raise ValidationError({"knowledge": "Knowledge belongs to another organization"})
+        raise ValidationError({"knowledge": t("ai.knowledge_other_organization")})
    attachments = list(knowledge.attachments.all())
    released_bytes = sum(attachment.size for attachment in attachments)
    for attachment in attachments:
@@ -112,12 +113,12 @@ def add_attachment(
    *, context: TenantContext, knowledge: Knowledge, upload: UploadedFile
 ) -> KnowledgeAttachment:
    if knowledge.organization_id != context.organization_id:
-        raise ValidationError({"knowledge": "Knowledge belongs to another organization"})
+        raise ValidationError({"knowledge": t("ai.knowledge_other_organization")})
    original_name = (upload.name or "").strip()
    if not original_name:
-        raise ValidationError({"file": "File name is required"})
+        raise ValidationError({"file": t("ai.file_name_required")})
    if upload.size and upload.size > _MAX_ATTACHMENT_BYTES:
-        raise ValidationError({"file": "File is too large (max 25 MB)"})
+        raise ValidationError({"file": t("ai.file_too_large_25")})
    existing = knowledge.attachments.filter(original_name=original_name).first()
    existing_size = existing.size if existing is not None else 0
    data = upload.read()
@@ -153,7 +154,7 @@ def add_attachment(

 def delete_attachment(*, context: TenantContext, attachment: KnowledgeAttachment) -> None:
    if attachment.knowledge.organization_id != context.organization_id:
-        raise ValidationError({"attachment": "Attachment belongs to another organization"})
+        raise ValidationError({"attachment": t("ai.attachment_other_organization")})
    knowledge = attachment.knowledge
    released_bytes = attachment.size
    attachment.file.delete(save=False)
@@ -0,0 +1,23 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    """Язык ответов агента.
+
+    Существующие агенты получают MIRROR — ответ на языке обращения. Для
+    одноязычной установки это ничего не меняет: клиенты пишут на её языке, и
+    агент отвечает так же. Для двуязычной — сразу перестаёт отвечать не на том
+    языке, на котором спросили.
+    """
+
+    dependencies = [
+        ("ai", "0016_remove_credential_mode"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="aiagent",
+            name="answer_language",
+            field=models.CharField(default="MIRROR", max_length=16),
+        ),
+    ]
@@ -14,6 +14,13 @@ DEFAULT_AI_MODEL = "anthropic/claude-sonnet-4.6"



+class AnswerLanguage(models.TextChoices):
+    """Режимы поля ``AIAgent.answer_language``, кроме кодов самих языков."""
+
+    MIRROR = "MIRROR", "Как у клиента"
+    ORGANIZATION = "ORGANIZATION", "Язык организации"
+
+
 class AIAgentStatus(models.TextChoices):

    DRAFT = "DRAFT", "Draft"
@@ -369,6 +376,19 @@ class AIAgent(TenantRelationModel):

    model_params = models.JSONField(default=dict, blank=True)

+    # Язык ответов клиенту. По умолчанию агент отвечает на языке, на котором
+    # к нему обратились: сигнал точный, лежит прямо в сообщении и не требует
+    # настройки. База знаний при этом остаётся одноязычной — поиск ведёт
+    # семантическая ветка (ai.retrieval), а эмбеддинги кроссязычные.
+    #
+    # Хранится либо режим (MIRROR, ORGANIZATION), либо код языка из
+    # chatballs.i18n.LANGUAGE_CODES — для тех, кому нужен ровно один язык
+    # независимо от того, на каком языке пришло сообщение.
+    answer_language = models.CharField(
+        max_length=16,
+        default=AnswerLanguage.MIRROR,
+    )
+
    # Инструкции из трёх частей; системный промпт собирается в этом порядке.

    persona = models.TextField(blank=True)  # кто он и что он
@@ -3,6 +3,8 @@ from __future__ import annotations
 import abc
 from dataclasses import dataclass

+from chatballs.i18n import t
+

@dataclass(frozen=True)
 class ChatMessage:
@@ -48,4 +50,4 @@ class LLMProvider(abc.ABC):
    def transcribe(self, *, audio: bytes, filename: str, content_type: str, model: str) -> str:
        """Расшифровка аудио (дизайн-базлайн v2). Реализуется OpenAI-совместимыми
        адаптерами (POST /audio/transcriptions); остальные явно отказывают."""
-        raise ProviderError(f"Провайдер {self.name} не поддерживает расшифровку аудио")
+        raise ProviderError(t("ai.provider_no_transcription", provider=self.name))
@@ -22,31 +22,68 @@ from chatballs.ai.provider.base import (
    LLMProvider,
    ProviderError,
 )
+from chatballs.i18n import t

 EMBEDDING_DIM = 16
 KNOWLEDGE_MARKER = "Отвечай только на основе этих знаний:"
 HANDOFF_TOKEN = "<<HANDOFF>>"
-HUMAN_REQUEST_WORDS = ("человек", "оператор", "сотрудник", "менеджер", "живой", "жалоб", "верн", "возврат")
+# Язык демо-агента определяется по письму клиента — тем же правилом, что и у
+# настоящего агента (AnswerLanguage.MIRROR). Здесь оно грубое, по алфавиту:
+# провайдер детерминированный и без сети, распознавать язык ему нечем.
+CYRILLIC = re.compile(r"[а-яё]", re.IGNORECASE)
+
+# Слова, по которым видно, что клиент просит живого человека.
+HUMAN_REQUEST_WORDS = {
+    "ru": ("человек", "оператор", "сотрудник", "менеджер", "живой", "жалоб", "верн", "возврат"),
+    "en": ("human", "operator", "agent", "manager", "person", "complain", "refund", "return"),
+}
 _WORD = re.compile(r"[а-яёa-z0-9]+", re.IGNORECASE)
 _HEADER = re.compile(r"^\s*\[[^\]]{1,120}\]\s*")
 _STOP = {
-    "и", "в", "на", "с", "по", "у", "а", "но", "не", "что", "как", "это", "для", "до", "от",
-    "за", "из", "к", "о", "же", "ли", "бы", "вы", "мы", "я", "он", "она", "они", "мне", "вас",
-    "есть", "можно", "нужно", "хочу", "подскажите", "здравствуйте", "добрый", "день", "the",
+    "ru": {
+        "и", "в", "на", "с", "по", "у", "а", "но", "не", "что", "как", "это", "для", "до", "от",
+        "за", "из", "к", "о", "же", "ли", "бы", "вы", "мы", "я", "он", "она", "они", "мне", "вас",
+        "есть", "можно", "нужно", "хочу", "подскажите", "здравствуйте", "добрый", "день",
+    },
+    "en": {
+        "the", "and", "for", "you", "your", "with", "from", "that", "this", "are", "was", "can",
+        "could", "would", "have", "has", "not", "but", "our", "what", "how", "when", "where",
+        "please", "hello", "hi", "there", "want", "need", "tell", "about", "will", "its",
+    },
+}
+
+# Грубая морфология: смысл в том, чтобы «доставка» ≈ «доставку», а
+# «deliveries» ≈ «delivery». Настоящий стеммер тут был бы зависимостью ради
+# демо-стенда.
+_SUFFIXES = {
+    "ru": (
+        "ами", "ями", "ого", "его", "ому", "ему", "ыми", "ими", "ах", "ях", "ов", "ев", "ам",
+        "ям", "ой", "ей", "ую", "юю", "ая", "яя", "ые", "ие", "ть", "ся", "а", "я", "ы", "и",
+        "у", "ю", "е", "о",
+    ),
+    "en": ("ing", "ies", "ied", "ers", "es", "ed", "er", "ly", "s"),
 }


-def _tokens(text: str) -> set[str]:
+def _language_of(text: str) -> str:
+    """Язык письма клиента: кириллица — русский, иначе английский."""
+
+    return "ru" if CYRILLIC.search(text) else "en"
+
+
+def _tokens(text: str, language: str) -> set[str]:
+    stop = _STOP[language]
    return {
        _stem(word.lower())
        for word in _WORD.findall(text)
-        if len(word) > 2 and word.lower() not in _STOP
+        if len(word) > 2 and word.lower() not in stop
    }


 def _stem(word: str) -> str:
-    # Грубая морфология: обрезаем частые русские окончания, чтобы «доставка» ≈ «доставку».
-    for suffix in ("ами", "ями", "ого", "его", "ому", "ему", "ыми", "ими", "ах", "ях", "ов", "ев", "ам", "ям", "ой", "ей", "ую", "юю", "ая", "яя", "ые", "ие", "ть", "ся", "а", "я", "ы", "и", "у", "ю", "е", "о"):
+    # Слово может быть на другом языке, чем письмо (знания одноязычные), поэтому
+    # окончания режем по алфавиту самого слова, а не по языку диалога.
+    for suffix in _SUFFIXES[_language_of(word)]:
        if len(word) > 4 and word.endswith(suffix):
            return word[: -len(suffix)]
    return word
@@ -85,12 +122,13 @@ def _knowledge_sentences(messages: list[ChatMessage]) -> list[str]:
 def compose_reply(messages: list[ChatMessage]) -> tuple[str, bool]:
    """Ответ по знаниям и признак передачи оператору."""
    question = next((m.content for m in reversed(messages) if m.role == "user"), "")
+    language = _language_of(question)
    lowered = question.lower()
-    wants_human = any(word in lowered for word in HUMAN_REQUEST_WORDS)
-    query = _tokens(question)
+    wants_human = any(word in lowered for word in HUMAN_REQUEST_WORDS[language])
+    query = _tokens(question, language)
    scored = []
    for index, sentence in enumerate(_knowledge_sentences(messages)):
-        overlap = len(query & _tokens(sentence))
+        overlap = len(query & _tokens(sentence, language))
        if overlap:
            scored.append((-overlap, index, sentence))
    scored.sort()
@@ -98,13 +136,8 @@ def compose_reply(messages: list[ChatMessage]) -> tuple[str, bool]:
    if best and not wants_human:
        return " ".join(best), False
    if best:
-        return (
-            " ".join(best)
-            + " Передаю диалог сотруднику — он поможет дальше."
-        ), True
-    return (
-        "Уточню этот вопрос у коллег и передам диалог сотруднику — он ответит в рабочее время."
-    ), True
+        return " ".join(best) + t("ai.demo_handover_suffix", language=language), True
+    return t("ai.demo_handover", language=language), True


 class DemoProvider(LLMProvider):
@@ -131,4 +164,4 @@ class DemoProvider(LLMProvider):
        ]

    def transcribe(self, *, audio: bytes, filename: str, content_type: str, model: str) -> str:
-        raise ProviderError("Расшифровка голосовых недоступна в демо-провайдере: подключите OpenRouter или совместимый провайдер в «Настройках».")
+        raise ProviderError(t("ai.demo_no_transcription"))
@@ -4,6 +4,7 @@ from django.core.exceptions import ImproperlyConfigured
 from chatballs.ai.provider import routing
 from chatballs.ai.provider.base import LLMProvider, ProviderError
 from chatballs.ai.provider.local import LocalProvider
+from chatballs.i18n import t


 def _test_provider() -> LLMProvider:
@@ -26,6 +27,6 @@ def get_provider(*, channel=None) -> LLMProvider:

    if channel is None:
        raise ProviderError(
-            "AI-провайдер не настроен: вызов без канала не может выбрать интеграцию"
+            t("ai.provider_not_configured")
        )
    return routing.resolve_provider(channel)
@@ -38,6 +38,7 @@ import urllib.error
 import urllib.request

 from chatballs.ai.provider.base import ChatMessage, ChatResult, EmbeddingResult, ProviderError
+from chatballs.i18n import t
 from chatballs.integrations.proxy import build_opener


@@ -155,7 +156,7 @@ def chat_completions(*, base_url: str, api_key: str, messages: list[ChatMessage]

    except (KeyError, IndexError, TypeError) as error:

-        raise ProviderError(f"Unexpected provider response: {error}") from error
+        raise ProviderError(t("ai.unexpected_provider_response", error=error)) from error

    usage = data.get("usage") or {}

@@ -195,7 +196,7 @@ def embeddings(*, base_url: str, api_key: str, texts: list[str], model: str,

    except (KeyError, TypeError) as error:

-        raise ProviderError(f"Unexpected provider response: {error}") from error
+        raise ProviderError(t("ai.unexpected_provider_response", error=error)) from error

    usage = data.get("usage") or {}

@@ -1,5 +1,6 @@
 from chatballs.ai.provider import openai_http
 from chatballs.ai.provider.base import ChatMessage, ChatResult, EmbeddingResult, LLMProvider
+from chatballs.i18n import t


 class OpenRouterProvider(LLMProvider):
@@ -65,10 +66,10 @@ class OpenRouterProvider(LLMProvider):
                payload = json.loads(response.read().decode("utf-8"))
        except urllib.error.HTTPError as error:
            detail = error.read().decode("utf-8", "replace")[:300]
-            raise ProviderError(f"Расшифровка не удалась: HTTP {error.code} {detail}") from error
+            raise ProviderError(t("ai.transcription_failed_http", code=error.code, detail=detail)) from error
        except (urllib.error.URLError, TimeoutError, OSError, json.JSONDecodeError) as error:
-            raise ProviderError(f"Расшифровка не удалась: {error}") from error
+            raise ProviderError(t("ai.transcription_failed", error=error)) from error
        text = str(payload.get("text") or "").strip()
        if not text:
-            raise ProviderError("Провайдер вернул пустую расшифровку")
+            raise ProviderError(t("ai.empty_transcript"))
        return text
@@ -25,6 +25,7 @@ from chatballs.ai.provider.base import LLMProvider, ProviderError
 from chatballs.ai.provider.custom import CustomProvider
 from chatballs.ai.provider.demo import DemoProvider
 from chatballs.ai.provider.openrouter import OpenRouterProvider
+from chatballs.i18n import t
 from chatballs.integrations.models import Integration, IntegrationProvider


@@ -79,7 +80,7 @@ def _channel_integration(channel) -> Integration:
        integration = getattr(channel, "provider_integration", None)
    if integration is None or not integration.secret:
        raise IntegrationNotConfigured(
-            "Агент не привязан к LLM-интеграции BYOK; выберите провайдера в настройках агента"
+            t("ai.agent_without_llm_integration")
        )
    return integration

@@ -104,5 +105,5 @@ def _provider_from_integration(integration: Integration) -> LLMProvider:
            proxy_url=integration.config.get("proxy_url", ""),
        )
    raise IntegrationNotConfigured(
-        f"Интеграция «{integration.provider}» не является LLM-провайдером BYOK"
+        t("ai.integration_is_not_llm", provider=integration.provider)
    )
@@ -11,6 +11,7 @@ from dataclasses import dataclass

 from django.core.exceptions import ValidationError

+from chatballs.i18n import t
 from chatballs.integrations.models import (
    Integration,
    IntegrationKind,
@@ -35,15 +36,23 @@ def configure_agent_provider(
            id=integration_id,
            organization_id=context.organization_id,
            kind=IntegrationKind.LLM_PROVIDER,
-            provider__in=[IntegrationProvider.OPENROUTER, IntegrationProvider.CUSTOM],
+            # DEMO — полноценный провайдер агента, а не заглушка настроек:
+            # на нём работает демо-стенд сразу после установки, без ключей.
+            # Без него любое сохранение агента демо-организации падало на
+            # «Неизвестная интеграция», хотя менялись инструкции, а не провайдер.
+            provider__in=[
+                IntegrationProvider.OPENROUTER,
+                IntegrationProvider.CUSTOM,
+                IntegrationProvider.DEMO,
+            ],
        )
    except (Integration.DoesNotExist, TypeError, ValueError) as error:
        raise ValidationError(
-            {"providerIntegrationId": "Unknown OpenRouter or Custom integration"}
+            {"providerIntegrationId": t("ai.unknown_provider_integration")}
        ) from error
    model = str(integration.config.get("default_model", "")).strip()
    if not model:
        raise ValidationError(
-            {"providerIntegrationId": "Integration default model is required"}
+            {"providerIntegrationId": t("ai.integration_model_required")}
        )
    return ProviderSelection(model, integration)
@@ -5,11 +5,15 @@ from chatballs.ai.agent_knowledge import (
    runtime_portal_articles_for_agent,
 )
 from chatballs.ai.invocation import invoke_chat
-from chatballs.ai.models import AIAgent, KnowledgeFragment
+from chatballs.ai.models import AIAgent, AnswerLanguage, KnowledgeFragment
 from chatballs.ai.provider.base import ChatMessage, ChatResult
 from chatballs.ai.retrieval import KnowledgeRetriever
+from chatballs.i18n import LANGUAGES, customer_language, normalize_language
 from chatballs.support_portals.addressing import article_public_url

+# Название языка — на нём самом: модели так однозначнее, чем «английский».
+LANGUAGE_LABELS = dict(LANGUAGES)
+
 # Гард стиля для мессенджеров: гарантирует простой текст вне зависимости от
 # того, что написано в авторских инструкциях.
 MESSENGER_STYLE_GUARD = (
@@ -31,6 +35,36 @@ HANDOFF_PROTOCOL = (
 )


+# Язык ответа. Директива стоит отдельной строкой и последней среди системных:
+# промпт написан по-русски и сам по себе тянет ответ в русский язык, а явное
+# указание это перебивает. Переводить сам промпт не нужно — его читает модель,
+# а не человек.
+ANSWER_IN_CUSTOMER_LANGUAGE = (
+    "Отвечай на том языке, на котором написано последнее сообщение клиента. "
+    "Если язык определить не удалось, отвечай на языке предыдущей переписки."
+)
+ANSWER_IN_FIXED_LANGUAGE = (
+    "Отвечай всегда на языке «{language}», независимо от того, на каком языке "
+    "написал клиент."
+)
+
+
+def answer_language_directive(agent: AIAgent) -> str:
+    """Строка системного промпта, задающая язык ответа агента."""
+
+    if agent.answer_language == AnswerLanguage.MIRROR:
+        return ANSWER_IN_CUSTOMER_LANGUAGE
+    if agent.answer_language == AnswerLanguage.ORGANIZATION:
+        code = customer_language(agent.channel.organization)
+    else:
+        code = normalize_language(agent.answer_language)
+    if not code:
+        # Код испортили руками или язык убрали из сборки: зеркало клиента
+        # безопаснее молчания — ответ всё равно попадёт в язык обращения.
+        return ANSWER_IN_CUSTOMER_LANGUAGE
+    return ANSWER_IN_FIXED_LANGUAGE.format(language=LANGUAGE_LABELS[code])
+
+
@dataclass(frozen=True)
 class AgentTurnResult:
    result: ChatResult
@@ -102,6 +136,7 @@ def run_agent_turn(
        messages.append(
            ChatMessage(role="system", content=MESSENGER_STYLE_GUARD + "\n\n" + HANDOFF_PROTOCOL)
        )
+    messages.append(ChatMessage(role="system", content=answer_language_directive(agent)))
    catalog = knowledge_catalog(agent)
    if catalog:
        messages.append(ChatMessage(role="system", content=catalog))
@@ -11,6 +11,7 @@ from chatballs.ai.models import (
 )
 from chatballs.ai.provider_selection import configure_agent_provider
 from chatballs.channels.models import Channel
+from chatballs.i18n import t
 from chatballs.tenancy.context import TenantContext


@@ -24,6 +25,7 @@ class AgentInput:
    persona: str
    tone: str
    instructions: str
+    answer_language: str
    knowledge_ids: list[int] | None  # None -> выбор знаний не меняется


@@ -71,7 +73,7 @@ def knowledge_for_agent_ids(
        .order_by("id")
    )
    if len(items) != len(requested_ids):
-        raise ValidationError({"knowledgeIds": "Unknown or unavailable knowledge item"})
+        raise ValidationError({"knowledgeIds": t("ai.knowledge_unknown_or_unavailable")})
    return items


@@ -79,16 +81,16 @@ def knowledge_for_agent_ids(
 def create_agent(*, context: TenantContext, data: AgentCreateInput) -> AIAgent:
    organization = context.organization
    if not data.channel_code:
-        raise ValidationError({"channel": "Channel is required"})
+        raise ValidationError({"channel": t("ai.channel_required")})
    try:
        channel = Channel.objects.select_for_update().get(
            organization=organization,
            code=data.channel_code,
        )
    except Channel.DoesNotExist as error:
-        raise ValidationError({"channel": "Channel not found"}) from error
+        raise ValidationError({"channel": t("channels.not_found")}) from error
    if AIAgent.objects.filter(channel=channel).exists():
-        raise ValidationError({"channel": "Channel already has an AI agent"})
+        raise ValidationError({"channel": t("channels.agent_exists")})

    knowledge_items = knowledge_for_agent_ids(
        context=context,
@@ -116,7 +118,7 @@ def create_agent(*, context: TenantContext, data: AgentCreateInput) -> AIAgent:
@transaction.atomic
 def update_agent(*, context: TenantContext, agent: AIAgent, data: AgentInput) -> AIAgent:
    if agent.channel.organization_id != context.organization_id:
-        raise ValidationError({"agent": "Agent belongs to another organization"})
+        raise ValidationError({"agent": t("ai.agent_other_organization")})
    channel = Channel.objects.select_for_update().get(
        id=agent.channel_id,
        organization_id=context.organization_id,
@@ -148,6 +150,7 @@ def update_agent(*, context: TenantContext, agent: AIAgent, data: AgentInput) ->
    locked.persona = data.persona
    locked.tone = data.tone
    locked.instructions = data.instructions
+    locked.answer_language = data.answer_language
    locked.save(
        update_fields=[
            "name",
@@ -159,6 +162,7 @@ def update_agent(*, context: TenantContext, agent: AIAgent, data: AgentInput) ->
            "persona",
            "tone",
            "instructions",
+            "answer_language",
            "updated_at",
        ]
    )
@@ -172,7 +176,7 @@ def set_agent_active(*, context: TenantContext, agent: AIAgent, is_active: bool)
    """Смена статуса AI без тарифных слотов (ADR-CHATBALLS-0042 §2): количество
    активных агентов не ограничено; активация требует настроенного провайдера."""
    if agent.channel.organization_id != context.organization_id:
-        raise ValidationError({"agent": "Agent belongs to another organization"})
+        raise ValidationError({"agent": t("ai.agent_other_organization")})
    locked = AIAgent.objects.select_for_update().get(
        pk=agent.id, organization_id=context.organization_id
    )
@@ -180,10 +184,10 @@ def set_agent_active(*, context: TenantContext, agent: AIAgent, is_active: bool)
    if locked.status == target_status:
        return locked
    if locked.status == AIAgentStatus.ARCHIVED:
-        raise ValidationError({"agent": "Archived AI agent cannot change state"})
+        raise ValidationError({"agent": t("ai.archived_agent_state")})
    if is_active and locked.provider_integration_id is None:
        raise ValidationError(
-            {"providerIntegrationId": "Для запуска AI выберите провайдера организации"}
+            {"providerIntegrationId": t("ai.pick_provider_first")}
        )
    locked.status = target_status
    locked.lifecycle_version += 1
@@ -0,0 +1,64 @@
+"""Язык ответов агента: директива системного промпта и её режимы.
+
+Язык ответа задаётся не переводом промпта, а отдельной строкой: промпт читает
+модель, и переводить его незачем, — но написан он по-русски и сам по себе
+тянет ответ в русский язык. Явное указание это перебивает.
+"""
+
+from __future__ import annotations
+
+from django.test import TestCase
+
+from chatballs.ai.models import AIAgent, AnswerLanguage
+from chatballs.ai.runtime import (
+    ANSWER_IN_CUSTOMER_LANGUAGE,
+    answer_language_directive,
+)
+from chatballs.channels.models import Channel
+from chatballs.identity.bootstrap import bootstrap_owner
+from chatballs.identity.models import Organization
+
+
+class AnswerLanguageDirectiveTests(TestCase):
+    def setUp(self) -> None:
+        bootstrap_owner(email="owner@example.com", password="temporary-password")
+        self.organization = Organization.objects.get(slug="demo")
+        self.channel = Channel.objects.create(
+            organization=self.organization, code="main", name="Main"
+        )
+
+    def _agent(self, answer_language: str) -> AIAgent:
+        return AIAgent(
+            organization=self.organization,
+            channel=self.channel,
+            name="Agent",
+            answer_language=answer_language,
+        )
+
+    def test_default_is_the_language_of_the_client(self) -> None:
+        self.assertEqual(AIAgent().answer_language, AnswerLanguage.MIRROR)
+        self.assertEqual(
+            answer_language_directive(self._agent(AnswerLanguage.MIRROR)),
+            ANSWER_IN_CUSTOMER_LANGUAGE,
+        )
+
+    def test_fixed_language_names_it_in_the_language_itself(self) -> None:
+        # Название языка на нём самом («English», а не «английский»): модели так
+        # однозначнее, и перевода названия не требуется.
+        directive = answer_language_directive(self._agent("en"))
+        self.assertIn("English", directive)
+        self.assertNotEqual(directive, ANSWER_IN_CUSTOMER_LANGUAGE)
+
+    def test_organization_mode_follows_the_organization(self) -> None:
+        self.organization.language = "en"
+        self.organization.save(update_fields=["language"])
+        directive = answer_language_directive(self._agent(AnswerLanguage.ORGANIZATION))
+        self.assertIn("English", directive)
+
+    def test_unknown_value_falls_back_to_the_client_language(self) -> None:
+        # Значение испортили руками или язык убрали из сборки: зеркало клиента
+        # безопаснее молчания — ответ всё равно попадёт в язык обращения.
+        self.assertEqual(
+            answer_language_directive(self._agent("klingon")),
+            ANSWER_IN_CUSTOMER_LANGUAGE,
+        )
@@ -89,3 +89,45 @@ class DemoIntegrationTests(TestCase):
        checked = run_integration_test(context=self.context, integration=integration)
        self.assertEqual(checked.status, IntegrationStatus.OK)
        self.assertIsInstance(_provider_from_integration(Integration.objects.get(pk=integration.pk)), DemoProvider)
+
+
+ENGLISH_KNOWLEDGE = """Отвечай только на основе этих знаний:
+Making takes 5-7 working days after payment. Delivery across the country is DPD, \
+3-5 working days. The London courier calls an hour ahead.
+Ready-made items can be returned within 14 days."""
+
+
+class DemoProviderLanguageTests(TestCase):
+    """Демо-агент отвечает на языке обращения — как настоящий в режиме MIRROR."""
+
+    def test_english_question_is_answered_from_english_knowledge(self) -> None:
+        result = DemoProvider().chat(
+            messages=[
+                ChatMessage(role="system", content=ENGLISH_KNOWLEDGE),
+                ChatMessage(role="user", content="How long does delivery take?"),
+            ],
+            model="demo",
+        )
+        self.assertIn("DPD", result.text)
+        self.assertNotIn(HANDOFF_TOKEN, result.text)
+
+    def test_english_request_for_human_hands_off_in_english(self) -> None:
+        result = DemoProvider().chat(
+            messages=[
+                ChatMessage(role="system", content=ENGLISH_KNOWLEDGE),
+                ChatMessage(role="user", content="I want to speak to a human"),
+            ],
+            model="demo",
+        )
+        self.assertIn(HANDOFF_TOKEN, result.text)
+        self.assertNotRegex(result.text, r"[А-Яа-яЁё]")
+
+    def test_russian_question_still_answers_in_russian(self) -> None:
+        result = DemoProvider().chat(
+            messages=[
+                ChatMessage(role="system", content=KNOWLEDGE),
+                ChatMessage(role="user", content="Сколько идёт доставка?"),
+            ],
+            model="demo",
+        )
+        self.assertIn("СДЭК", result.text)
@@ -159,6 +159,28 @@ class AgentProviderOwnershipTests(TestCase):
        with self.assertRaises(ValidationError):
            configure_agent_provider(context=self.context, integration_id=999999)

+    def test_demo_provider_is_a_valid_agent_provider(self) -> None:
+        """Регрессия: демо-стенд нельзя было редактировать.
+
+        Демо ставит агентов на встроенный DEMO-провайдер, а выбор провайдера
+        его не принимал. Поле providerIntegrationId уходит с каждым PATCH
+        карточки, поэтому падало любое сохранение агента — даже правка
+        инструкций, где провайдер не меняли.
+        """
+
+        demo = create_integration(
+            context=self.context,
+            data=IntegrationInput(
+                provider=IntegrationProvider.DEMO,
+                name="Демо-провайдер",
+                secret="",
+                config={},
+            ),
+        )
+        selection = configure_agent_provider(context=self.context, integration_id=demo.id)
+        self.assertEqual(selection.integration, demo)
+        self.assertEqual(selection.model, "demo")
+
    def test_selection_never_writes_to_the_channel(self) -> None:
        integration = self._integration()
        selection = configure_agent_provider(
@@ -30,6 +30,7 @@ from chatballs.ai.selectors import (
 from chatballs.ai.serializers import attachment_payload, knowledge_payload
 from chatballs.api.pagination import page_payload, paginate
 from chatballs.api.permissions import HasCapability
+from chatballs.i18n import t
 from chatballs.identity.audit import record_audit_event
 from chatballs.identity.models import AuditEvent

@@ -122,7 +123,7 @@ class KnowledgeDetailView(_KnowledgeBaseView):
        try:
            knowledge = self._read_knowledge(request, knowledge_id)
        except Knowledge.DoesNotExist:
-            return Response({"detail": "Knowledge not found"}, status=404)
+            return Response({"detail": t("ai.knowledge_not_found")}, status=404)
        payload = knowledge_payload(knowledge)
        created_event = (
            AuditEvent.objects.filter(
@@ -162,7 +163,7 @@ class KnowledgeDetailView(_KnowledgeBaseView):
        try:
            knowledge = self._write_knowledge(request, knowledge_id)
        except Knowledge.DoesNotExist:
-            return Response({"detail": "Knowledge not found"}, status=404)
+            return Response({"detail": t("ai.knowledge_not_found")}, status=404)
        try:
            data = knowledge_input(request.data, current=knowledge)
            if not employee_can_write_knowledge(
@@ -185,7 +186,7 @@ class KnowledgeDetailView(_KnowledgeBaseView):
        try:
            knowledge = self._write_knowledge(request, knowledge_id)
        except Knowledge.DoesNotExist:
-            return Response({"detail": "Knowledge not found"}, status=404)
+            return Response({"detail": t("ai.knowledge_not_found")}, status=404)
        self._audit(request, "deleted", knowledge)
        delete_knowledge(context=request.tenant_context, knowledge=knowledge)
        return Response(status=204)
@@ -195,7 +196,7 @@ class KnowledgeImportView(_KnowledgeBaseView):
    def post(self, request: Request) -> Response:
        documents = request.data.get("documents")
        if not isinstance(documents, list) or not documents:
-            return Response({"detail": "documents must be a non-empty list"}, status=400)
+            return Response({"detail": t("ai.documents_non_empty")}, status=400)
        result = import_knowledge_documents(
            context=request.tenant_context,
            documents=documents,
@@ -222,7 +223,7 @@ class KnowledgeReindexView(_KnowledgeBaseView):
        try:
            knowledge = self._write_knowledge(request, knowledge_id)
        except Knowledge.DoesNotExist:
-            return Response({"detail": "Knowledge not found"}, status=404)
+            return Response({"detail": t("ai.knowledge_not_found")}, status=404)
        reindex_knowledge(knowledge)
        self._audit(request, "reindexed", knowledge)
        knowledge = self._write_knowledge(request, knowledge_id)
@@ -236,10 +237,10 @@ class KnowledgeAttachmentUploadView(_KnowledgeBaseView):
        try:
            knowledge = self._write_knowledge(request, knowledge_id)
        except Knowledge.DoesNotExist:
-            return Response({"detail": "Knowledge not found"}, status=404)
+            return Response({"detail": t("ai.knowledge_not_found")}, status=404)
        upload = request.FILES.get("file")
        if upload is None:
-            return Response({"detail": "file is required (multipart/form-data)"}, status=400)
+            return Response({"detail": t("ai.file_required")}, status=400)
        try:
            attachment = add_attachment(
                context=request.tenant_context, knowledge=knowledge, upload=upload
@@ -255,10 +256,10 @@ class KnowledgeAttachmentDeleteView(_KnowledgeBaseView):
        try:
            knowledge = self._write_knowledge(request, knowledge_id)
        except Knowledge.DoesNotExist:
-            return Response({"detail": "Knowledge not found"}, status=404)
+            return Response({"detail": t("ai.knowledge_not_found")}, status=404)
        attachment = knowledge.attachments.filter(id=attachment_id).first()
        if attachment is None:
-            return Response({"detail": "Attachment not found"}, status=404)
+            return Response({"detail": t("ai.attachment_not_found")}, status=404)
        delete_attachment(context=request.tenant_context, attachment=attachment)
        self._audit(request, "attachment_deleted", knowledge)
        return Response(status=204)
@@ -25,6 +25,8 @@ from typing import Any
 from django.db.models import Q, QuerySet
 from rest_framework.exceptions import ValidationError

+from chatballs.i18n import t
+
 DEFAULT_PAGE_SIZE = 20
 MAX_PAGE_SIZE = 100
 DEFAULT_WINDOW_SIZE = 50
@@ -41,9 +43,9 @@ def _bounded_int(params, name: str, default: int, maximum: int) -> int:
    try:
        value = int(raw)
    except (TypeError, ValueError):
-        raise ValidationError(f"{name}: ожидается целое число") from None
+        raise ValidationError(t("api.expected_integer", name=name)) from None
    if value < 1:
-        raise ValidationError(f"{name}: ожидается число больше нуля")
+        raise ValidationError(t("api.expected_positive", name=name))
    return min(value, maximum)


@@ -55,9 +57,9 @@ def cursor_id(params, name: str = "cursor") -> int | None:
    try:
        value = int(raw)
    except (TypeError, ValueError):
-        raise ValidationError(f"{name}: ожидается идентификатор записи") from None
+        raise ValidationError(t("api.expected_record_id", name=name)) from None
    if value < 1:
-        raise ValidationError(f"{name}: ожидается идентификатор записи")
+        raise ValidationError(t("api.expected_record_id", name=name))
    return value


@@ -192,7 +194,7 @@ def window(
    выпадать из ленты или повторяться на границе окна.
    """
    if not keys:
-        raise ValueError("окно требует хотя бы один ключ сортировки")
+        raise ValueError(t("api.window_needs_sort_key"))
    ordered = queryset.order_by(*[key.ordering for key in keys])
    if after is not None:
        condition = _after_cursor(ordered, keys, after)
@@ -15,6 +15,7 @@ from chatballs.calls.services import CALL_INVITE_SEND
 from chatballs.calls.tokens import issue_invite_token
 from chatballs.conversations import transports
 from chatballs.events.handlers import register
+from chatballs.i18n import customer_language, t
 from chatballs.identity.instance_settings import public_base_url
 from chatballs.tenancy.context import TenantContext

@@ -49,8 +50,11 @@ def handle_call_invite_send(payload: dict, context: TenantContext | None) -> Non
        token, token_hash = issue_invite_token()
        invite.token_hash = token_hash
        invite.save(update_fields=["token_hash"])
-        call_label = "аудиозвонок" if call.kind == "AUDIO" else "видеозвонок"
-        invite_text = f"Приглашаем вас на {call_label}. Нажмите кнопку, чтобы перейти к звонку."
+        # Приглашение читает клиент, а не оператор, и рождается оно в воркере,
+        # где запроса нет: язык берём у организации.
+        language = customer_language(call.conversation.organization)
+        call_label = t("calls.kind_audio" if call.kind == "AUDIO" else "calls.kind_video", language=language)
+        invite_text = t("calls.invite_text", kind=call_label, language=language)
        url = f"{public_base_url()}/calls/{token}?kind={call.kind}"
        sent = transports.send_call_invite(
            call.delivery_connection,
@@ -11,7 +11,8 @@ from chatballs.calls.models import (
    CallStatus,
    ParticipantSide,
 )
-from chatballs.conversations.models import Message, MessageAuthor
+from chatballs.conversations.models import Message, MessageAuthor, SystemEvent
+from chatballs.i18n import t

 ALLOWED_TRANSITIONS = {
    CallStatus.REQUESTED: {
@@ -39,6 +40,29 @@ def _format_duration(seconds: int) -> str:
    return f"{seconds // 60:02d}:{seconds % 60:02d}"


+# Код события и его параметры: интерфейс собирает фразу на языке читателя, а
+# текст остаётся в базе запасным вариантом и читаемой записью.
+_TIMELINE_EVENTS: dict[str, str] = {
+    CallStatus.ACCEPTED: SystemEvent.CALL_ACCEPTED,
+    CallStatus.DECLINED: SystemEvent.CALL_DECLINED,
+    CallStatus.CANCELLED: SystemEvent.CALL_CANCELLED,
+    CallStatus.MISSED: SystemEvent.CALL_MISSED,
+    CallStatus.EXPIRED: SystemEvent.CALL_EXPIRED,
+    CallStatus.ACTIVE: SystemEvent.CALL_STARTED,
+    CallStatus.ENDED: SystemEvent.CALL_ENDED,
+    CallStatus.FAILED: SystemEvent.CALL_FAILED,
+}
+
+
+def _timeline_event(call: CallSession, target_status: str) -> tuple[str, dict]:
+    """Код события и параметры для строки таймлайна."""
+
+    code = _TIMELINE_EVENTS.get(target_status, "")
+    if code == SystemEvent.CALL_ENDED and call.duration_seconds is not None:
+        return code, {"duration": _format_duration(call.duration_seconds)}
+    return code, {}
+
+
 def _timeline_text(call: CallSession, target_status: str) -> str | None:
    # Системные события звонка в timeline диалога (SPEC-CHATBALLS-0013 §13).
    # Вызывается только при фактической смене статуса — retry дублей не даёт.
@@ -76,10 +100,12 @@ def transition_call(
    if target_status == call.status:
        return call
    if target_status not in ALLOWED_TRANSITIONS.get(call.status, set()):
-        raise CallInvalidTransition(f"Переход {call.status} -> {target_status} запрещён")
+        raise CallInvalidTransition(
+            t("calls.transition_forbidden", current=call.status, target=target_status)
+        )
    normalized_failure_code = failure_code.strip()
    if target_status == CallStatus.FAILED and not FAILURE_CODE_PATTERN.fullmatch(normalized_failure_code):
-        raise CallInvalidTransition("Для FAILED требуется нормализованный failure_code")
+        raise CallInvalidTransition(t("calls.failure_code_required"))

    now = timezone.now()
    update_fields = ["status", "updated_at"]
@@ -106,9 +132,12 @@ def transition_call(
    call.save(update_fields=update_fields)
    timeline_text = _timeline_text(call, target_status)
    if timeline_text is not None:
+        event, params = _timeline_event(call, target_status)
        Message.objects.create(
            conversation_id=call.conversation_id,
            author_type=MessageAuthor.SYSTEM,
+            system_event=event,
+            system_params=params,
            text=timeline_text,
        )
    return call
@@ -3,6 +3,7 @@ import uuid
 from django.conf import settings
 from django.db import models

+from chatballs.i18n import t
 from chatballs.tenancy.models import TenantRelationModel


@@ -40,7 +41,7 @@ TERMINAL_CALL_STATUSES = (
 class CallEndedBy(models.TextChoices):
    STAFF = "STAFF", "Сотрудник"
    CUSTOMER = "CUSTOMER", "Клиент"
-    SYSTEM = "SYSTEM", "Система"
+    SYSTEM = "SYSTEM", t("admin.actor_system")
    TIMEOUT = "TIMEOUT", "Таймаут"


@@ -1,6 +1,7 @@
 from chatballs.calls.errors import CallAccessDenied
 from chatballs.calls.models import CallSession
 from chatballs.conversations.models import Conversation
+from chatballs.i18n import t
 from chatballs.identity.models import OrganizationMembership
 from chatballs.identity.policy import require_capability
 from chatballs.tenancy.context import TenantContext
@@ -8,11 +9,11 @@ from chatballs.tenancy.context import TenantContext

 def ensure_conversation_call_access(*, user, conversation: Conversation) -> None:
    if not require_capability(user, "conversations.call", conversation):
-        raise CallAccessDenied("Нет доступа к звонкам")
+        raise CallAccessDenied(t("calls.no_access"))
    from chatballs.conversations.selectors import conversation_is_visible

    if not conversation_is_visible(actor=user, conversation=conversation):
-        raise CallAccessDenied("Диалог вне групп сотрудника")
+        raise CallAccessDenied(t("calls.conversation_outside_groups"))


 def ensure_call_access(*, user, call_session: CallSession) -> None:
@@ -26,6 +26,7 @@ from chatballs.calls.tokens import (
    issue_call_access_token,
    verify_call_access_token,
 )
+from chatballs.i18n import t
 from chatballs.identity.models import Organization, OrganizationMembership
 from chatballs.tenancy.context import TenantContext
 from chatballs.tenancy.database import tenant_atomic
@@ -39,7 +40,7 @@ class ResolvedInvite:


 def resolve_invite(*, token: str) -> ResolvedInvite:
-    message = "Недействительное или истёкшее приглашение"
+    message = t("calls.invite_invalid")
    token_hash = hash_invite_token(token)
    route = call_invite_route(token_hash)
    if route is None:
@@ -90,11 +91,11 @@ def _authorize_call_access(
    claims = verify_call_access_token(token)
    route = call_session_route(str(claims.call_session_id))
    if route is None:
-        raise CallTokenError("Недействительный или истёкший call access token")
+        raise CallTokenError(t("calls.token_invalid"))
    try:
        organization = Organization.objects.get(pk=route.organization_id)
    except Organization.DoesNotExist:
-        raise CallTokenError("Недействительный или истёкший call access token") from None
+        raise CallTokenError(t("calls.token_invalid")) from None
    resource_context = TenantContext.for_resource(organization)
    with tenant_atomic(resource_context):
        try:
@@ -102,9 +103,9 @@ def _authorize_call_access(
                "conversation", "conversation__channel", "initiated_by", "organization"
            ).get(id=claims.call_session_id, organization=organization)
        except CallSession.DoesNotExist:
-            raise CallTokenError("Недействительный или истёкший call access token") from None
+            raise CallTokenError(t("calls.token_invalid")) from None
        if call.status in TERMINAL_CALL_STATUSES and not allow_terminal:
-            raise CallTokenError("Звонок уже завершён")
+            raise CallTokenError(t("calls.already_ended"))
        membership = None
        if claims.side == ParticipantSide.STAFF:
            participant = call.participants.select_related("user").filter(
@@ -133,7 +134,7 @@ def _authorize_call_access(
                or call.status not in {CallStatus.REQUESTED, CallStatus.RINGING}
            )
        if not valid:
-            raise CallTokenError("Недействительный или истёкший call access token")
+            raise CallTokenError(t("calls.token_invalid"))
        context = (
            TenantContext.for_membership(membership)
            if membership is not None
@@ -170,7 +171,7 @@ def _customer_call(
        allow_terminal=allow_terminal,
    )
    if claims.side != ParticipantSide.CUSTOMER:
-        raise CallTokenError("Недействительный или истёкший call access token")
+        raise CallTokenError(t("calls.token_invalid"))
    return call, context


@@ -186,7 +187,7 @@ def accept_call_by_access_token(*, token: str) -> CallSession:
                organization=context.organization,
            )
        except CallInvalidTransition as error:
-            raise CallConflict("Приглашение уже нельзя принять") from error
+            raise CallConflict(t("calls.invite_cannot_accept")) from error


 def decline_call_by_access_token(*, token: str) -> CallSession:
@@ -205,7 +206,7 @@ def decline_call_by_access_token(*, token: str) -> CallSession:
                organization=context.organization,
            )
        except CallInvalidTransition as error:
-            raise CallConflict("Приглашение уже нельзя отклонить") from error
+            raise CallConflict(t("calls.invite_cannot_decline")) from error


 def end_call_by_access_token(*, token: str) -> CallSession:
@@ -49,9 +49,11 @@ from chatballs.conversations.models import (
    LifecycleState,
    Message,
    MessageAuthor,
+    SystemEvent,
 )
 from chatballs.conversations.services import ClaimError, claim_locked_conversation
 from chatballs.events.services import DomainEvent, enqueue_event
+from chatballs.i18n import t
 from chatballs.integrations.features import call_allowed
 from chatballs.integrations.models import IntegrationProvider
 from chatballs.tenancy.context import TenantContext
@@ -80,7 +82,7 @@ class CreatedCall:

 def _conversation_identity(conversation: Conversation) -> ConnectionIdentity:
    if conversation.contact_id is None or conversation.connection_id is None:
-        raise CallConflict("У диалога нет клиентской identity для звонка")
+        raise CallConflict(t("calls.no_client_identity"))
    identities = list(
        ConnectionIdentity.objects.filter(
            contact_id=conversation.contact_id,
@@ -89,29 +91,29 @@ def _conversation_identity(conversation: Conversation) -> ConnectionIdentity:
        .order_by("id")[:2]
    )
    if len(identities) != 1:
-        raise CallConflict("Клиентская identity звонка отсутствует или неоднозначна")
+        raise CallConflict(t("calls.identity_missing_or_ambiguous"))
    return identities[0]


 def _check_call_creation_conflicts(*, conversation: Conversation, initiator) -> None:
    if conversation.lifecycle != LifecycleState.OPEN:
-        raise CallConflict("Звонок можно запросить только в открытом диалоге")
+        raise CallConflict(t("calls.only_in_open_conversation"))
    if CallSession.objects.filter(
        conversation=conversation,
        status__in=UNFINISHED_CALL_STATUSES,
    ).exists():
-        raise CallConflict("В диалоге уже есть незавершённый звонок")
+        raise CallConflict(t("calls.unfinished_call_exists"))
    if CallSession.objects.filter(
        initiated_by=initiator,
        status__in=UNFINISHED_CALL_STATUSES,
    ).exists():
-        raise CallConflict("Сотрудник уже участвует в другом звонке")
+        raise CallConflict(t("calls.operator_busy"))
    if (
        conversation.control_mode == ControlMode.HUMAN
        and conversation.assigned_operator_id
        and conversation.assigned_operator_id != initiator.id
    ):
-        raise CallConflict("Диалог уже ведёт другой оператор")
+        raise CallConflict(t("calls.conversation_taken"))


@transaction.atomic
@@ -120,7 +122,7 @@ def create_call_request(
 ) -> CreatedCall:
    initiator = context.actor_user
    if initiator is None or context.membership is None:
-        raise CallAccessDenied("Для звонка требуется контекст сотрудника")
+        raise CallAccessDenied(t("calls.operator_context_required"))
    conversation = (
        Conversation.objects.select_for_update()
        .select_related("channel")
@@ -129,7 +131,7 @@ def create_call_request(
    ensure_conversation_call_access(user=context.membership, conversation=conversation)
    if not call_allowed(conversation.connection, kind):
        raise CallAccessDenied(
-            "Видеозвонки отключены для этой точки входа" if kind == CallKind.VIDEO else "Звонки отключены для этой точки входа"
+            t("calls.video_off_entry_point") if kind == CallKind.VIDEO else t("calls.calls_off_entry_point")
        )
    identity = _conversation_identity(conversation)
    _check_call_creation_conflicts(conversation=conversation, initiator=initiator)
@@ -151,7 +153,7 @@ def create_call_request(
                kind=kind,
            )
    except IntegrityError as error:
-        raise CallConflict("Не удалось создать второй незавершённый звонок") from error
+        raise CallConflict(t("calls.second_call_rejected")) from error

    CallInvite.objects.create(
        organization=context.organization,
@@ -181,6 +183,10 @@ def create_call_request(
    Message.objects.create(
        conversation=conversation,
        author_type=MessageAuthor.SYSTEM,
+        system_event=SystemEvent.CALL_REQUESTED,
+        # Вид звонка — параметр, а не часть кода: фразу собирает интерфейс, и
+        # «аудио» против «видео» там отдельным словом словаря.
+        system_params={"operator": initiator_label, "kind": call.kind},
        text=f"Оператор {initiator_label} запросил {call_word}",
    )
    if conversation.connection.provider == IntegrationProvider.WEB:
@@ -210,13 +216,13 @@ def create_call_request(
 def issue_staff_access_token(*, context: TenantContext, call_session: CallSession) -> str:
    user = context.actor_user
    if user is None or context.membership is None:
-        raise CallAccessDenied("Для звонка требуется контекст сотрудника")
+        raise CallAccessDenied(t("calls.operator_context_required"))
    ensure_call_access(user=context.membership, call_session=call_session)
    participant_exists = call_session.participants.filter(side=ParticipantSide.STAFF, user=user).exists()
    if not participant_exists:
-        raise CallConflict("Сотрудник не является участником звонка")
+        raise CallConflict(t("calls.not_a_participant"))
    if call_session.status in TERMINAL_CALL_STATUSES:
-        raise CallConflict("Звонок уже завершён")
+        raise CallConflict(t("calls.already_ended"))
    return issue_call_access_token(
        call_session_id=call_session.id,
        side=ParticipantSide.STAFF,
@@ -227,10 +233,10 @@ def issue_staff_access_token(*, context: TenantContext, call_session: CallSessio
 def cancel_call(*, context: TenantContext, call_session: CallSession) -> CallSession:
    user = context.actor_user
    if user is None or context.membership is None:
-        raise CallAccessDenied("Для звонка требуется контекст сотрудника")
+        raise CallAccessDenied(t("calls.operator_context_required"))
    ensure_call_access(user=context.membership, call_session=call_session)
    if not call_session.participants.filter(side=ParticipantSide.STAFF, user=user).exists():
-        raise CallConflict("Сотрудник не является участником звонка")
+        raise CallConflict(t("calls.not_a_participant"))
    try:
        # Повторная отмена идемпотентна: transition_call вернёт звонок без изменений.
        return transition_call(
@@ -239,7 +245,7 @@ def cancel_call(*, context: TenantContext, call_session: CallSession) -> CallSes
            ended_by=CallEndedBy.STAFF,
        )
    except CallInvalidTransition as error:
-        raise CallConflict("Звонок уже нельзя отменить") from error
+        raise CallConflict(t("calls.cannot_cancel")) from error


 def active_call_for_conversation(conversation: Conversation) -> CallSession | None:
@@ -272,10 +278,10 @@ def webchat_active_call(identity: ConnectionIdentity) -> CallSession | None:
 def open_call_for_identity(*, identity: ConnectionIdentity) -> ResolvedInvite:
    call = webchat_active_call(identity)
    if call is None:
-        raise CallTokenError("Активное приглашение не найдено")
+        raise CallTokenError(t("webchat.no_active_invite"))
    invite = CallInvite.objects.select_for_update().get(call_session=call)
    if invite.expires_at <= timezone.now():
-        raise CallTokenError("Активное приглашение не найдено")
+        raise CallTokenError(t("webchat.no_active_invite"))
    if invite.opened_at is None:
        invite.opened_at = timezone.now()
        invite.save(update_fields=["opened_at"])
@@ -290,7 +296,7 @@ def open_call_for_identity(*, identity: ConnectionIdentity) -> ResolvedInvite:
 def decline_call_for_identity(*, identity: ConnectionIdentity) -> CallSession:
    call = webchat_active_call(identity)
    if call is None:
-        raise CallTokenError("Активное приглашение не найдено")
+        raise CallTokenError(t("webchat.no_active_invite"))
    try:
        return transition_call(
            call_session_id=call.id,
@@ -298,4 +304,4 @@ def decline_call_for_identity(*, identity: ConnectionIdentity) -> CallSession:
            ended_by=CallEndedBy.CUSTOMER,
        )
    except CallInvalidTransition as error:
-        raise CallConflict("Приглашение уже нельзя отклонить") from error
+        raise CallConflict(t("calls.invite_cannot_decline")) from error
@@ -14,6 +14,7 @@ from django.conf import settings

 from chatballs.calls.errors import CallTokenError
 from chatballs.calls.models import ParticipantSide
+from chatballs.i18n import t

 ACCESS_TOKEN_VERSION = 1
 ACCESS_TOKEN_PURPOSE = "call-access"
@@ -82,7 +83,7 @@ def issue_call_access_token(*, call_session_id: uuid.UUID, side: str, subject_id


 def verify_call_access_token(token: str) -> CallAccessClaims:
-    message = "Недействительный или истёкший call access token"
+    message = t("calls.token_invalid")
    if not token or "." not in token:
        raise CallTokenError(message)
    encoded, signature = token.rsplit(".", 1)
@@ -25,6 +25,7 @@ from chatballs.calls.services import (
    resolve_invite,
 )
 from chatballs.conversations.models import Conversation
+from chatballs.i18n import t
 from chatballs.identity.audit import record_audit_event


@@ -49,16 +50,16 @@ class CallCreateView(APIView):

    def post(self, request: Request, conversation_id: int) -> Response:
        if "kind" not in request.data:
-            return Response({"detail": "Укажите тип звонка"}, status=400)
+            return Response({"detail": t("calls.kind_required")}, status=400)
        kind = str(request.data.get("kind", ""))
        if kind not in CallKind.values:
-            return Response({"detail": "Недопустимый тип звонка"}, status=400)
+            return Response({"detail": t("calls.kind_invalid")}, status=400)
        try:
            created = create_call_request(
                context=request.tenant_context, conversation_id=conversation_id, kind=kind
            )
        except Conversation.DoesNotExist:
-            return Response({"detail": "Диалог не найден"}, status=404)
+            return Response({"detail": t("conversations.not_found")}, status=404)
        except CallAccessDenied as error:
            return Response({"detail": str(error)}, status=403)
        except CallConflict as error:
@@ -95,7 +96,7 @@ class CallDetailView(APIView):
                id=call_session_id, organization=request.tenant_context.organization
            )
        except CallSession.DoesNotExist:
-            return Response({"detail": "Звонок не найден"}, status=404)
+            return Response({"detail": t("calls.not_found")}, status=404)
        try:
            ensure_call_access(user=request.tenant_context.membership, call_session=call)
        except CallAccessDenied as error:
@@ -113,7 +114,7 @@ class StaffAccessTokenView(APIView):
            )
            token = issue_staff_access_token(context=request.tenant_context, call_session=call)
        except CallSession.DoesNotExist:
-            return Response({"detail": "Звонок не найден"}, status=404)
+            return Response({"detail": t("calls.not_found")}, status=404)
        except CallAccessDenied as error:
            return Response({"detail": str(error)}, status=403)
        except CallConflict as error:
@@ -131,7 +132,7 @@ class CallCancelView(APIView):
            )
            cancel_call(context=request.tenant_context, call_session=call)
        except CallSession.DoesNotExist:
-            return Response({"detail": "Звонок не найден"}, status=404)
+            return Response({"detail": t("calls.not_found")}, status=404)
        except CallAccessDenied as error:
            return Response({"detail": str(error)}, status=403)
        except CallConflict as error:
@@ -163,7 +164,7 @@ class ConversationActiveCallView(APIView):
                user=request.tenant_context.membership, conversation=conversation
            )
        except Conversation.DoesNotExist:
-            return Response({"detail": "Диалог не найден"}, status=404)
+            return Response({"detail": t("conversations.not_found")}, status=404)
        except CallAccessDenied as error:
            return Response({"detail": str(error)}, status=403)
        call = active_call_for_conversation(conversation)
@@ -181,7 +182,7 @@ class InviteResolveView(APIView):
        try:
            resolved = resolve_invite(token=token)
        except CallTokenError:
-            return Response({"detail": "Недействительное или истёкшее приглашение"}, status=404)
+            return Response({"detail": t("calls.invite_invalid")}, status=404)
        return _token_response(
            {
                "call": public_invite_payload(
@@ -214,7 +215,7 @@ class CallAccessStateView(_CallAccessView):
        try:
            call = call_state_by_access_token(token=_bearer_token(request))
        except CallTokenError:
-            return Response({"detail": "Недействительный или истёкший call access token"}, status=404)
+            return Response({"detail": t("calls.token_invalid")}, status=404)
        return _token_response(
            {"call": public_call_state_payload(call), "iceServers": ice_servers_payload()}
        )
@@ -225,7 +226,7 @@ class CallAccessAcceptView(_CallAccessView):
        try:
            call = accept_call_by_access_token(token=_bearer_token(request))
        except CallTokenError:
-            return Response({"detail": "Недействительный или истёкший call access token"}, status=404)
+            return Response({"detail": t("calls.token_invalid")}, status=404)
        except CallConflict as error:
            return Response({"detail": str(error)}, status=409)
        return _token_response({"call": public_call_state_payload(call)})
@@ -236,7 +237,7 @@ class CallAccessDeclineView(_CallAccessView):
        try:
            call = decline_call_by_access_token(token=_bearer_token(request))
        except CallTokenError:
-            return Response({"detail": "Недействительный или истёкший call access token"}, status=404)
+            return Response({"detail": t("calls.token_invalid")}, status=404)
        except CallConflict as error:
            return Response({"detail": str(error)}, status=409)
        return _token_response({"call": public_call_state_payload(call)})
@@ -247,5 +248,5 @@ class CallAccessEndView(_CallAccessView):
        try:
            call = end_call_by_access_token(token=_bearer_token(request))
        except CallTokenError:
-            return Response({"detail": "Недействительный или истёкший call access token"}, status=404)
+            return Response({"detail": t("calls.token_invalid")}, status=404)
        return _token_response({"call": public_call_state_payload(call)})
@@ -9,6 +9,7 @@ from __future__ import annotations

 from django.core.exceptions import PermissionDenied

+from chatballs.i18n import t
 from chatballs.identity.policy import has_capability_any_scope
 from chatballs.tenancy.context import TenantContext

@@ -32,15 +33,17 @@ def has_organization_capability(context: TenantContext, capability: str) -> bool


 def require_organization_manage(context: TenantContext, *, operation: str) -> None:
+    """``operation`` — ключ каталога, а не готовый текст: отказ читает человек."""
+
    if not has_organization_capability(context, CHANNELS_MANAGE):
-        raise PermissionDenied(f"{operation} требует channels.manage")
+        raise PermissionDenied(t("channels.operation_needs_manage", operation=t(operation)))


 def require_channel_manage(context: TenantContext) -> None:
    if not has_organization_capability(context, CHANNELS_MANAGE):
-        raise PermissionDenied("Нет прав на изменение канала")
+        raise PermissionDenied(t("channels.no_rights_to_change"))


 def require_connections_manage(context: TenantContext) -> None:
    if not has_organization_capability(context, INTEGRATIONS_MANAGE):
-        raise PermissionDenied("Привязка подключения требует integrations.manage")
+        raise PermissionDenied(t("channels.binding_needs_manage"))
@@ -1,5 +1,6 @@
 from chatballs.ai.provider.base import ChatResult, ProviderError
 from chatballs.ai.runtime import run_agent_turn
+from chatballs.i18n import t


 def run_channel_turn(*, channel, message: str, history: list[dict] | None = None) -> ChatResult:
@@ -11,5 +12,5 @@ def run_channel_turn(*, channel, message: str, history: list[dict] | None = None
    """
    agent = getattr(channel, "ai_agent", None)
    if agent is None or not agent.is_active:
-        raise ProviderError("Channel has no active AI agent")
+        raise ProviderError(t("channels.no_active_agent"))
    return run_agent_turn(agent=agent, message=message, history=history, style_guard=True).result
@@ -10,6 +10,7 @@ from django.db import transaction

 from chatballs.channels import authorization
 from chatballs.channels.models import Channel
+from chatballs.i18n import t
 from chatballs.identity.group_models import EmployeeGroup
 from chatballs.integrations.models import Integration, IntegrationKind
 from chatballs.tenancy.context import TenantContext
@@ -34,7 +35,7 @@ class ChannelHasReferences(Exception):

    def __init__(self, blockers: list[dict[str, Any]]) -> None:
        self.blockers = blockers
-        super().__init__("Канал нельзя удалить: есть связанные записи")
+        super().__init__(t("channels.cannot_delete_linked"))

    def payload(self) -> dict[str, Any]:
        return {"detail": str(self), "blockers": self.blockers}
@@ -46,7 +47,7 @@ class ConnectionAlreadyBound(Exception):
    def __init__(self, *, integration: Integration) -> None:
        self.integration = integration
        super().__init__(
-            "Подключение уже привязано к другому каналу: перенос требует force"
+            t("channels.binding_conflict")
        )

    def payload(self) -> dict[str, Any]:
@@ -73,9 +74,9 @@ class ChannelUpdate:
 def _clean_name(raw: object) -> str:
    name = str(raw or "").strip()
    if not name:
-        raise ValidationError({"name": "Название канала не может быть пустым"})
+        raise ValidationError({"name": t("channels.name_required")})
    if len(name) > NAME_MAX_LENGTH:
-        raise ValidationError({"name": "Название канала длиннее 255 символов"})
+        raise ValidationError({"name": t("channels.name_too_long")})
    return name


@@ -90,7 +91,7 @@ def _group_for_channel(
            organization_id=context.organization_id,
        )
    except EmployeeGroup.DoesNotExist as error:
-        raise ValidationError({"groupId": "Unknown group"}) from error
+        raise ValidationError({"groupId": t("channels.unknown_group")}) from error


@transaction.atomic
@@ -113,11 +114,11 @@ def update_channel(
        authorization.require_channel_manage(context)
    if update.is_active is not UNSET and update.is_active != locked.is_active:
        authorization.require_organization_manage(
-            context, operation="Изменение статуса канала"
+            context, operation="channels.operation_status_change"
        )
    if update.policy:
        authorization.require_organization_manage(
-            context, operation="Изменение политики канала"
+            context, operation="channels.operation_policy_change"
        )

    changed: list[str] = []
@@ -148,10 +149,10 @@ def _messenger_integration(*, context: TenantContext, integration_id: int) -> In
            id=integration_id, organization_id=context.organization_id
        )
    except Integration.DoesNotExist as error:
-        raise ValidationError({"integrationId": "Подключение не найдено"}) from error
+        raise ValidationError({"integrationId": t("channels.connection_not_found")}) from error
    if integration.kind != IntegrationKind.MESSENGER:
        raise ValidationError(
-            {"integrationId": "LLM-провайдер не является подключением канала"}
+            {"integrationId": t("channels.llm_is_not_a_connection")}
        )
    return integration

@@ -168,7 +169,7 @@ def bind_connection(
    authorization.require_connections_manage(context)
    if not channel.is_active:
        raise ValidationError(
-            {"channelId": "Нельзя привязать подключение к архивному каналу"}
+            {"channelId": t("channels.archived_channel_binding")}
        )
    integration = _messenger_integration(context=context, integration_id=integration_id)
    previous_channel_id = integration.channel_id
@@ -188,7 +189,7 @@ def unbind_connection(
    authorization.require_connections_manage(context)
    integration = _messenger_integration(context=context, integration_id=integration_id)
    if integration.channel_id != channel.id:
-        raise ValidationError({"integrationId": "Подключение не привязано к каналу"})
+        raise ValidationError({"integrationId": t("channels.connection_not_bound")})
    # Диалоги не затрагиваются: Conversation.connection объявлен PROTECT.
    integration.channel = None
    integration.save(update_fields=["channel", "updated_at"])
@@ -28,6 +28,7 @@ from chatballs.conversations.serializers import message_payload
 from chatballs.conversations.transports.base import guess_content_type, safe_filename
 from chatballs.conversations.view_base import ConversationViewBase
 from chatballs.conversations.voice_views import _visible_message
+from chatballs.i18n import t

 MAX_FILE_BYTES = 20 * 1024 * 1024
 # Исполняемые и скриптовые типы в чат не отправляем ни в одну сторону.
@@ -38,12 +39,12 @@ INLINE_TYPES = ("image/jpeg", "image/png", "image/gif", "image/webp", "applicati
 def validate_upload(upload) -> str:
    """Причина отказа или пустая строка."""
    if upload.size > MAX_FILE_BYTES:
-        return "Файл больше 20 МБ"
+        return t("conversations.attachment_too_large")
    if not upload.size:
-        return "Пустой файл"
+        return t("conversations.attachment_empty")
    name = safe_filename(upload.name or "")
    if name.lower().endswith(BLOCKED_SUFFIXES):
-        return "Такой тип файла отправить нельзя"
+        return t("conversations.attachment_type_blocked")
    return ""


@@ -62,9 +63,9 @@ class MessageAttachmentView(ConversationViewBase):
        try:
            message = _visible_message(request, message_id)
        except (Message.DoesNotExist, Conversation.DoesNotExist):
-            return Response({"detail": "Сообщение не найдено"}, status=404)
+            return Response({"detail": t("conversations.message_not_found")}, status=404)
        if message.kind != MessageKind.FILE or not message.attachment:
-            return Response({"detail": "Файл недоступен"}, status=404)
+            return Response({"detail": t("conversations.file_unavailable")}, status=404)
        return attachment_response(message, inline="inline" in request.GET)


@@ -80,15 +81,15 @@ class ConversationAttachmentView(ConversationViewBase):
        try:
            conversation = self._conversation(request, conversation_id, self.required_capability)
        except Conversation.DoesNotExist:
-            return Response({"detail": "Диалог не найден"}, status=404)
+            return Response({"detail": t("conversations.not_found")}, status=404)
        if conversation.lifecycle != LifecycleState.OPEN:
-            return Response({"detail": "Диалог закрыт"}, status=409)
+            return Response({"detail": t("conversations.closed")}, status=409)
        connection = conversation.connection
        if connection is None or not transports.supports_file_send(connection):
-            return Response({"detail": "Файлы недоступны в этом канале"}, status=400)
+            return Response({"detail": t("conversations.files_unavailable_channel")}, status=400)
        upload = request.FILES.get("file")
        if upload is None:
-            return Response({"detail": "Прикрепите файл"}, status=400)
+            return Response({"detail": t("conversations.attach_file")}, status=400)
        problem = validate_upload(upload)
        if problem:
            return Response({"detail": problem}, status=400)
@@ -113,7 +114,7 @@ class ConversationAttachmentView(ConversationViewBase):
            caption=caption,
        )
        if not sent:
-            return Response({"detail": "Не удалось отправить файл в канал"}, status=502)
+            return Response({"detail": t("conversations.file_send_failed")}, status=502)
        message = Message.objects.create(
            conversation=conversation,
            author_type=MessageAuthor.OPERATOR,
@@ -25,6 +25,7 @@ from chatballs.conversations.models import (
 from chatballs.conversations.selectors import apply_conversation_visibility
 from chatballs.conversations.serializers import conversation_payload
 from chatballs.conversations.view_base import ConversationViewBase
+from chatballs.i18n import t
 from chatballs.identity.avatars import user_avatar_url
 from chatballs.identity.group_models import EmployeeGroup
 from chatballs.identity.models import HumanUser, OrganizationMembership
@@ -53,10 +54,10 @@ class ConversationPriorityView(ConversationViewBase):
                request, conversation_id, self.required_capability
            )
        except Conversation.DoesNotExist:
-            return Response({"detail": "Диалог не найден"}, status=404)
+            return Response({"detail": t("conversations.not_found")}, status=404)
        priority = str(request.data.get("priority", "")).strip().upper()
        if priority not in ConversationPriority.values:
-            return Response({"detail": "Неизвестный приоритет"}, status=400)
+            return Response({"detail": t("conversations.unknown_priority")}, status=400)
        conversation.priority = priority
        conversation.save(update_fields=["priority"])
        self._audit(request, "priority_changed", conversation)
@@ -82,19 +83,19 @@ class ConversationContactView(ConversationViewBase):
                request, conversation_id, self.required_capability
            )
        except Conversation.DoesNotExist:
-            return Response({"detail": "Диалог не найден"}, status=404)
+            return Response({"detail": t("conversations.not_found")}, status=404)
        contact = conversation.contact
        if contact is None:
-            return Response({"detail": "У диалога нет контакта"}, status=400)
+            return Response({"detail": t("conversations.no_contact")}, status=400)
        changed: list[str] = []
        for field, limit in self.LIMITS.items():
            if field not in request.data:
                continue
            value = str(request.data.get(field) or "").strip()
            if len(value) > limit:
-                return Response({"detail": f"Поле {field}: не длиннее {limit} символов"}, status=400)
+                return Response({"detail": t("conversations.field_too_long", field=field, limit=limit)}, status=400)
            if field == "name" and not value:
-                return Response({"detail": "Имя контакта не может быть пустым"}, status=400)
+                return Response({"detail": t("conversations.contact_name_empty")}, status=400)
            setattr(contact, field, value)
            changed.append(field)
        if changed:
@@ -118,10 +119,10 @@ class ConversationNoteView(ConversationViewBase):
                request, conversation_id, self.required_capability
            )
        except Conversation.DoesNotExist:
-            return Response({"detail": "Диалог не найден"}, status=404)
+            return Response({"detail": t("conversations.not_found")}, status=404)
        note = str(request.data.get("note", ""))
        if len(note) > 4000:
-            return Response({"detail": "Заметка длиннее 4000 символов"}, status=400)
+            return Response({"detail": t("conversations.note_too_long")}, status=400)
        conversation.note = note
        conversation.note_author = request.user if note else None
        conversation.note_updated_at = timezone.now() if note else None
@@ -146,12 +147,12 @@ class ConversationLabelsView(ConversationViewBase):
                request, conversation_id, self.required_capability
            )
        except Conversation.DoesNotExist:
-            return Response({"detail": "Диалог не найден"}, status=404)
+            return Response({"detail": t("conversations.not_found")}, status=404)
        label_ids = request.data.get("labelIds")
        if not isinstance(label_ids, list) or not all(
            isinstance(item, int) for item in label_ids
        ):
-            return Response({"detail": "labelIds must be a list of ids"}, status=400)
+            return Response({"detail": t("conversations.label_ids_list")}, status=400)
        labels = list(
            ConversationLabel.objects.filter(
                organization_id=request.tenant_context.organization_id,
@@ -159,7 +160,7 @@ class ConversationLabelsView(ConversationViewBase):
            )
        )
        if len(labels) != len(set(label_ids)):
-            return Response({"detail": "Неизвестная метка"}, status=400)
+            return Response({"detail": t("conversations.unknown_label")}, status=400)
        conversation.labels.set(labels)
        return Response(
            {
@@ -182,13 +183,13 @@ class ConversationArchiveView(ConversationViewBase):
                request, conversation_id, self.required_capability
            )
        except Conversation.DoesNotExist:
-            return Response({"detail": "Диалог не найден"}, status=404)
+            return Response({"detail": t("conversations.not_found")}, status=404)
        archived = request.data.get("archived")
        if not isinstance(archived, bool):
-            return Response({"detail": "archived must be a boolean"}, status=400)
+            return Response({"detail": t("conversations.archived_boolean")}, status=400)
        if not archived and not can_administer_access(request.tenant_context.membership):
            return Response(
-                {"detail": "Восстановить диалог может только администратор"}, status=403
+                {"detail": t("conversations.restore_admin_only")}, status=403
            )
        conversation.archived_at = timezone.now() if archived else None
        conversation.save(update_fields=["archived_at"])
@@ -336,9 +337,9 @@ class LabelListView(APIView):
        name = str(request.data.get("name", "")).strip()
        color = str(request.data.get("color", "")).strip()
        if not name or len(name) > 60:
-            return Response({"detail": "Название метки: 1-60 символов"}, status=400)
+            return Response({"detail": t("conversations.label_name_length")}, status=400)
        if len(color) > 20:
-            return Response({"detail": "Некорректный цвет"}, status=400)
+            return Response({"detail": t("conversations.invalid_colour")}, status=400)
        existing = ConversationLabel.objects.filter(
            organization_id=request.tenant_context.organization_id, name__iexact=name
        ).first()
@@ -365,16 +366,16 @@ class LabelDetailView(APIView):
        try:
            label = self._label(request, label_id)
        except ConversationLabel.DoesNotExist:
-            return Response({"detail": "Метка не найдена"}, status=404)
+            return Response({"detail": t("conversations.label_not_found")}, status=404)
        if "name" in request.data:
            name = str(request.data.get("name", "")).strip()
            if not name or len(name) > 60:
-                return Response({"detail": "Название метки: 1-60 символов"}, status=400)
+                return Response({"detail": t("conversations.label_name_length")}, status=400)
            label.name = name
        if "color" in request.data:
            color = str(request.data.get("color", "")).strip()
            if len(color) > 20:
-                return Response({"detail": "Некорректный цвет"}, status=400)
+                return Response({"detail": t("conversations.invalid_colour")}, status=400)
            label.color = color
        label.save()
        return Response({"label": _label_payload(label)})
@@ -383,7 +384,7 @@ class LabelDetailView(APIView):
        try:
            label = self._label(request, label_id)
        except ConversationLabel.DoesNotExist:
-            return Response({"detail": "Метка не найдена"}, status=404)
+            return Response({"detail": t("conversations.label_not_found")}, status=404)
        label.delete()
        return Response(status=204)

@@ -405,13 +406,13 @@ class ReplyTemplateListView(APIView):
        title = str(request.data.get("title", "")).strip()
        text = str(request.data.get("text", "")).strip()
        if not title or len(title) > 120:
-            return Response({"detail": "Название шаблона: 1-120 символов"}, status=400)
+            return Response({"detail": t("conversations.template_name_length")}, status=400)
        if not text:
-            return Response({"detail": "Текст шаблона обязателен"}, status=400)
+            return Response({"detail": t("conversations.template_text_required")}, status=400)
        if ReplyTemplate.objects.filter(
            organization_id=request.tenant_context.organization_id, title__iexact=title
        ).exists():
-            return Response({"detail": "Шаблон с таким названием уже есть"}, status=409)
+            return Response({"detail": t("conversations.template_name_taken")}, status=409)
        template = ReplyTemplate.objects.create(
            organization_id=request.tenant_context.organization_id,
            title=title,
@@ -433,16 +434,16 @@ class ReplyTemplateDetailView(APIView):
        try:
            template = self._template(request, template_id)
        except ReplyTemplate.DoesNotExist:
-            return Response({"detail": "Шаблон не найден"}, status=404)
+            return Response({"detail": t("conversations.template_not_found")}, status=404)
        if "title" in request.data:
            title = str(request.data.get("title", "")).strip()
            if not title or len(title) > 120:
-                return Response({"detail": "Название шаблона: 1-120 символов"}, status=400)
+                return Response({"detail": t("conversations.template_name_length")}, status=400)
            template.title = title
        if "text" in request.data:
            text = str(request.data.get("text", "")).strip()
            if not text:
-                return Response({"detail": "Текст шаблона обязателен"}, status=400)
+                return Response({"detail": t("conversations.template_text_required")}, status=400)
            template.text = text
        template.save()
        return Response({"template": _template_payload(template)})
@@ -451,6 +452,6 @@ class ReplyTemplateDetailView(APIView):
        try:
            template = self._template(request, template_id)
        except ReplyTemplate.DoesNotExist:
-            return Response({"detail": "Шаблон не найден"}, status=404)
+            return Response({"detail": t("conversations.template_not_found")}, status=404)
        template.delete()
        return Response(status=204)
@@ -26,10 +26,11 @@ from chatballs.conversations.models import (
    Conversation,
    LifecycleState,
 )
+from chatballs.i18n import t
 from chatballs.identity.audit_catalog import (
-    AUDIT_RESULT_LABELS,
    audit_action_label,
    audit_object_label,
+    audit_result_label,
 )
 from chatballs.identity.avatars import user_avatar_url_in
 from chatballs.identity.models import AuditEvent
@@ -154,7 +155,11 @@ def client_row(contact: Contact) -> dict:
    return {
        "id": contact.id,
        "cid": f"CUS-{contact.id}",
-        "name": contact.name or "Гость",
+        "name": contact.name or t("conversations.guest"),
+        # Признак анонимного посетителя: интерфейс красит его аватар иначе.
+        # Раньше он выводился из самой подписи регуляркой по слову «Гость» —
+        # на другом языке это перестало бы работать.
+        "isGuest": not contact.name,
        "phone": contact.phone,
        "avatarUrl": contact.avatar_url,
        "email": next(
@@ -181,7 +186,12 @@ def client_row(contact: Contact) -> dict:


 def _dialog_status(conversation: Conversation) -> str:
-    return {"closed": "Закрыт", "operator": "Оператор", "ai": "AI", "wait": "Ждёт оператора"}[_mode(conversation)]
+    return {
+        "closed": t("conversations.dialog_status_closed"),
+        "operator": t("conversations.dialog_status_operator"),
+        "ai": "AI",
+        "wait": t("conversations.dialog_status_wait"),
+    }[_mode(conversation)]


 def client_detail(organization_id: int, contact_id: int) -> dict:
@@ -252,9 +262,9 @@ def client_detail(organization_id: int, contact_id: int) -> dict:
    # Активность из жизненного цикла диалогов (created/closed) — реальные события.
    activity: list[dict] = []
    for conversation in conversations:
-        activity.append({"type": "created", "title": f"Диалог · {conversation.channel.name}", "at": conversation.created_at.isoformat()})
+        activity.append({"type": "created", "title": t("conversations.activity_started", channel=conversation.channel.name), "at": conversation.created_at.isoformat()})
        if conversation.lifecycle == LifecycleState.CLOSED:
-            activity.append({"type": "closed", "title": f"Диалог закрыт · {conversation.channel.name}", "at": conversation.last_activity_at.isoformat()})
+            activity.append({"type": "closed", "title": t("conversations.activity_closed", channel=conversation.channel.name), "at": conversation.last_activity_at.isoformat()})
    activity.sort(key=lambda item: item["at"], reverse=True)

    conversation_ids = [str(conversation.id) for conversation in conversations]
@@ -277,15 +287,19 @@ def client_detail(organization_id: int, contact_id: int) -> dict:
                # тогда показываем код — как в журнале.
                "action": audit_action_label(event.action) or event.action,
                "object": audit_object_label(event.object_type, event.object_id),
-                "actor": (event.actor.full_name or event.actor.email) if event.actor_id else "Система",
-                "result": AUDIT_RESULT_LABELS.get(event.result, "Неизвестно"),
+                "actor": (event.actor.full_name or event.actor.email) if event.actor_id else t("admin.actor_system"),
+                "result": audit_result_label(event.result),
            }
        )

    return {
        "id": contact.id,
        "cid": f"CUS-{contact.id}",
-        "name": contact.name or "Гость",
+        "name": contact.name or t("conversations.guest"),
+        # Признак анонимного посетителя: интерфейс красит его аватар иначе.
+        # Раньше он выводился из самой подписи регуляркой по слову «Гость» —
+        # на другом языке это перестало бы работать.
+        "isGuest": not contact.name,
        "phone": contact.phone,
        "avatarUrl": contact.avatar_url,
        # Поля карточки из чата (описание, компания, город).
@@ -325,7 +339,7 @@ def _merges(organization_id: int, contact: Contact) -> list[dict]:
        {
            "id": row.id,
            "sourceId": row.source_id,
-            "sourceName": row.source.name or "Гость",
+            "sourceName": row.source.name or t("conversations.guest"),
            "sourceCid": f"CUS-{row.source_id}",
            "reason": row.reason,
            "actor": _actor_name(row.actor),
@@ -354,7 +368,8 @@ def _duplicate_candidate(organization_id: int, contact: Contact) -> dict | None:
    return {
        "id": other.id,
        "cid": f"CUS-{other.id}",
-        "name": other.name or "Гость",
+        "name": other.name or t("conversations.guest"),
+        "isGuest": not other.name,
        "avatarUrl": other.avatar_url,
        "dialogs": other.conversations.count(),
        "sources": sorted({identity.connection.provider for identity in identities}),
@@ -13,6 +13,7 @@ from django.db import transaction
 from django.utils import timezone

 from chatballs.conversations.models import ConnectionIdentity, Contact, ContactMerge, Conversation
+from chatballs.i18n import t
 from chatballs.identity.audit import record_audit_event

 # Поля карточки, которые дозаполняются из исходного контакта, если у целевого
@@ -24,7 +25,7 @@ MIN_REASON_LENGTH = 5
 def _clean_reason(reason: str) -> str:
    cleaned = (reason or "").strip()
    if len(cleaned) < MIN_REASON_LENGTH:
-        raise ValidationError("Укажите причину объединения — она попадёт в журнал действий")
+        raise ValidationError(t("sales.merge_reason_required"))
    return cleaned[:2000]


@@ -33,14 +34,14 @@ def merge_contacts(*, organization, target_id: int, source_id: int, reason: str,
    """Перенести идентичности и диалоги source в target."""
    cleaned = _clean_reason(reason)
    if target_id == source_id:
-        raise ValidationError("Нельзя объединить контакт с самим собой")
+        raise ValidationError(t("sales.merge_self"))
    try:
        target = Contact.objects.select_for_update().get(organization=organization, id=target_id)
        source = Contact.objects.select_for_update().get(organization=organization, id=source_id)
    except Contact.DoesNotExist as error:
-        raise ValidationError("Контакт не найден") from error
+        raise ValidationError(t("sales.contact_not_found")) from error
    if source.merged_into_id is not None or target.merged_into_id is not None:
-        raise ValidationError("Контакт уже объединён с другим — сначала разъедините")
+        raise ValidationError(t("sales.already_merged"))

    identity_ids = list(ConnectionIdentity.objects.filter(contact=source).values_list("id", flat=True))
    conversation_ids = list(
@@ -94,9 +95,9 @@ def revert_merge(*, organization, merge_id: int, reason: str, actor, request=Non
    try:
        merge = ContactMerge.objects.select_for_update().get(organization=organization, id=merge_id)
    except ContactMerge.DoesNotExist as error:
-        raise ValidationError("Объединение не найдено") from error
+        raise ValidationError(t("sales.merge_not_found")) from error
    if merge.reverted_at is not None:
-        raise ValidationError("Это объединение уже разъединено")
+        raise ValidationError(t("sales.already_unmerged"))

    source = merge.source
    target = merge.target
@@ -28,10 +28,12 @@ from chatballs.conversations.models import (
    Message,
    MessageAuthor,
    MessageKind,
+    SystemEvent,
    TranscriptStatus,
 )
 from chatballs.conversations.transports.base import InboundMessage
 from chatballs.events.models import EventOwnership, InboxEvent
+from chatballs.i18n import t
 from chatballs.notifications.models import NotificationAudience, NotificationType
 from chatballs.notifications.services import notify, notify_management
 from chatballs.tenancy.context import TenantContext
@@ -303,6 +305,14 @@ def ingest_inbound(integration, inbound: InboundMessage) -> None:
            audience=NotificationAudience.OPERATORS,
            title=f"Новый диалог · {channel.name}",
            body=f"{contact.name or 'Гость'} · {integration.provider}: {message_text[:80]}",
+            title_key="notifications.new_dialog",
+            body_key="notifications.new_dialog_body",
+            text_params={
+                "channel": channel.name,
+                "contact": contact.name or t("conversations.guest"),
+                "provider": integration.provider,
+                "preview": message_text[:80],
+            },
            target_id=conversation.id,
            source_type="Conversation",
            source_id=conversation.id,
@@ -318,6 +328,8 @@ def ingest_inbound(integration, inbound: InboundMessage) -> None:
            recipient_user=operator,
            title=f"Новое сообщение · {contact.name or 'Гость'}",
            body=message_text[:120],
+            title_key="notifications.new_message",
+            text_params={"contact": contact.name or t("conversations.guest")},
            target_id=conversation.id,
            source_type="Conversation",
            source_id=conversation.id,
@@ -352,7 +364,10 @@ def ingest_inbound(integration, inbound: InboundMessage) -> None:
                type=NotificationType.DIALOG_WAITING,
                audience=NotificationAudience.OPERATORS,
                title=f"Нужен оператор · {contact.name or 'Гость'}",
+                title_key="notifications.operator_needed",
+                text_params={"contact": contact.name or t("conversations.guest")},
                body="Голосовое без расшифровки" if is_voice else message_text[:120],
+                body_key="notifications.voice_without_transcript" if is_voice else "",
                target_id=conversation.id,
                source_type="Conversation",
                source_id=conversation.id,
@@ -376,7 +391,12 @@ def ingest_inbound(integration, inbound: InboundMessage) -> None:
        conversation.expected_responder = ExpectedResponder.OPERATOR
        conversation.last_activity_at = timezone.now()
        conversation.save(update_fields=["control_mode", "expected_responder", "last_activity_at"])
-        Message.objects.create(conversation=conversation, author_type=MessageAuthor.SYSTEM, text="AI недоступен — диалог передан оператору")
+        Message.objects.create(
+            conversation=conversation,
+            author_type=MessageAuthor.SYSTEM,
+            system_event=SystemEvent.AI_UNAVAILABLE,
+            text="AI недоступен — диалог передан оператору",
+        )
        fallback = "Извините, прямо сейчас не получается ответить. Я передал ваш вопрос специалисту — он скоро подключится."
        Message.objects.create(conversation=conversation, author_type=MessageAuthor.AI, text=fallback)
        notify(
@@ -384,7 +404,10 @@ def ingest_inbound(integration, inbound: InboundMessage) -> None:
            type=NotificationType.DIALOG_WAITING,
            audience=NotificationAudience.OPERATORS,
            title=f"Нужен оператор · {contact.name or 'Гость'}",
+            title_key="notifications.operator_needed",
+            text_params={"contact": contact.name or t("conversations.guest")},
            body="AI временно недоступен, диалог ждёт ответа",
+            body_key="notifications.ai_unavailable_waiting",
            target_id=conversation.id,
            source_type="Conversation",
            source_id=conversation.id,
@@ -395,6 +418,9 @@ def ingest_inbound(integration, inbound: InboundMessage) -> None:
            type=NotificationType.INTEGRATION_ERROR,
            title=f"Ошибка AI · {channel.name}",
            body="AI временно недоступен, диалог передан оператору",
+            title_key="notifications.ai_error",
+            body_key="notifications.ai_unavailable_handed_over",
+            text_params={"channel": channel.name},
            target_id=conversation.id,
            source_type="Conversation",
            source_id=conversation.id,
@@ -418,12 +444,19 @@ def ingest_inbound(integration, inbound: InboundMessage) -> None:
    conversation.save(update_fields=["control_mode", "last_activity_at", "expected_responder"])

    if handoff:
-        Message.objects.create(conversation=conversation, author_type=MessageAuthor.SYSTEM, text="AI передал диалог оператору")
+        Message.objects.create(
+            conversation=conversation,
+            author_type=MessageAuthor.SYSTEM,
+            system_event=SystemEvent.AI_HANDED_OVER,
+            text="AI передал диалог оператору",
+        )
        notify(
            context=context,
            type=NotificationType.DIALOG_WAITING,
            audience=NotificationAudience.OPERATORS,
            title=f"AI передал диалог · {contact.name or 'Гость'}",
+            title_key="notifications.ai_handed_over",
+            text_params={"contact": contact.name or t("conversations.guest")},
            body=ai_input[:120],
            target_id=conversation.id,
            source_type="Conversation",
@@ -0,0 +1,23 @@
+# Generated by Django 5.2.17 on 2026-09-09 19:15
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('conversations', '0020_conversation_last_message_at_and_more'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='message',
+            name='system_event',
+            field=models.CharField(blank=True, choices=[('operator_took', 'Оператор перехватил диалог'), ('returned_to_ai', 'Диалог возвращён AI'), ('returned_to_queue', 'Диалог возвращён в очередь'), ('ai_unavailable', 'AI недоступен'), ('ai_handed_over', 'AI передал диалог оператору'), ('call_requested', 'Запрошен звонок'), ('call_accepted', 'Клиент принял приглашение'), ('call_declined', 'Клиент отклонил приглашение'), ('call_cancelled', 'Приглашение отменено'), ('call_missed', 'Звонок пропущен'), ('call_expired', 'Приглашение истекло'), ('call_started', 'Звонок начался'), ('call_ended', 'Звонок завершён'), ('call_failed', 'Звонок не состоялся')], default='', max_length=32),
+        ),
+        migrations.AddField(
+            model_name='message',
+            name='system_params',
+            field=models.JSONField(blank=True, default=dict),
+        ),
+    ]
@@ -4,6 +4,7 @@ from django.contrib.postgres.search import SearchVector
 from django.db import models
 from django.utils import timezone

+from chatballs.i18n import t
 from chatballs.tenancy.models import TenantRelationModel

 # Минимальный домен диалогов (ADR-HUB-0001/0002/0003/0006). Состояние диалога
@@ -254,7 +255,34 @@ class MessageAuthor(models.TextChoices):
    CONTACT = "CONTACT", "Клиент"
    AI = "AI", "AI"
    OPERATOR = "OPERATOR", "Оператор"
-    SYSTEM = "SYSTEM", "Система"
+    SYSTEM = "SYSTEM", t("admin.actor_system")
+
+
+class SystemEvent(models.TextChoices):
+    """Код системного события диалога.
+
+    Текст события раньше писался в ``text`` по-русски и оставался таким
+    навсегда: история — записи, а не подписи, и перевести её задним числом
+    нельзя. Поэтому в базу идёт код, а фразу собирает интерфейс на языке того,
+    кто её читает. ``text`` продолжает заполняться: он остаётся и запасным
+    вариантом для строк, записанных до этого поля, и тем, что видно в базе
+    глазами.
+    """
+
+    OPERATOR_TOOK = "operator_took", "Оператор перехватил диалог"
+    RETURNED_TO_AI = "returned_to_ai", "Диалог возвращён AI"
+    RETURNED_TO_QUEUE = "returned_to_queue", "Диалог возвращён в очередь"
+    AI_UNAVAILABLE = "ai_unavailable", "AI недоступен"
+    AI_HANDED_OVER = "ai_handed_over", "AI передал диалог оператору"
+    CALL_REQUESTED = "call_requested", "Запрошен звонок"
+    CALL_ACCEPTED = "call_accepted", "Клиент принял приглашение"
+    CALL_DECLINED = "call_declined", "Клиент отклонил приглашение"
+    CALL_CANCELLED = "call_cancelled", "Приглашение отменено"
+    CALL_MISSED = "call_missed", "Звонок пропущен"
+    CALL_EXPIRED = "call_expired", "Приглашение истекло"
+    CALL_STARTED = "call_started", "Звонок начался"
+    CALL_ENDED = "call_ended", "Звонок завершён"
+    CALL_FAILED = "call_failed", "Звонок не состоялся"


 class MessageKind(models.TextChoices):
@@ -300,6 +328,11 @@ class Message(TenantRelationModel):
    # телефона), полученный контакт. Пустая строка = текст.
    kind = models.CharField(max_length=32, choices=MessageKind.choices, default=MessageKind.TEXT, blank=True)
    text = models.TextField(blank=True)
+    # Системное событие: код и его параметры (имя оператора, длительность).
+    # Пустой код — обычное сообщение либо системная запись, сделанная до
+    # появления поля; такие показываются по сохранённому тексту.
+    system_event = models.CharField(max_length=32, choices=SystemEvent.choices, blank=True, default="")
+    system_params = models.JSONField(default=dict, blank=True)
    # Санитизированный HTML входящего email. Остальные транспорты и исходящие
    # ответы используют plain text.
    content_html = models.TextField(blank=True)
@@ -323,6 +356,13 @@ class Message(TenantRelationModel):
        ordering = ["created_at"]
        indexes = [
            # Полнотекстовый поиск по сообщениям (поиск в списке диалогов).
+            #
+            # Конфигурация «russian» покрывает обе переписки, и второй индекс
+            # под английский был бы тратой места: в ней asciiword отдан
+            # english_stem, а word — russian_stem, поэтому английские слова
+            # стеммятся английским стеммером, а русские русским. Обратное
+            # неверно: «english» оставляет кириллицу без основы. Проверено
+            # тестом conversations/test_search_language.py.
            GinIndex(
                SearchVector("text", config="russian"),
                name="conv_message_text_fts",
@@ -8,6 +8,7 @@ from chatballs.conversations.contacts_merge import merge_contacts, revert_merge
 from chatballs.conversations.models import Contact
 from chatballs.conversations.stats import sales_overview_stats
 from chatballs.conversations.view_base import ConversationViewBase
+from chatballs.i18n import t
 from chatballs.identity.audit import record_audit_event
 from chatballs.identity.models import EmployeeRole

@@ -41,23 +42,23 @@ class ClientDetailView(ConversationViewBase):
        try:
            return Response({"client": client_detail(self._org(request).id, contact_id)})
        except Contact.DoesNotExist:
-            return Response({"detail": "Клиент не найден"}, status=404)
+            return Response({"detail": t("sales.client_not_found")}, status=404)

    def patch(self, request: Request, contact_id: int) -> Response:
        organization = self._org(request)
        try:
            contact = Contact.objects.get(id=contact_id, organization=organization)
        except Contact.DoesNotExist:
-            return Response({"detail": "Клиент не найден"}, status=404)
+            return Response({"detail": t("sales.client_not_found")}, status=404)
        changed: list[str] = []
        for field, limit in self.LIMITS.items():
            if field not in request.data:
                continue
            value = str(request.data.get(field) or "").strip()
            if len(value) > limit:
-                return Response({"detail": f"Поле {field}: не длиннее {limit} символов"}, status=400)
+                return Response({"detail": t("conversations.field_too_long", field=field, limit=limit)}, status=400)
            if field == "name" and not value:
-                return Response({"detail": "Имя контакта не может быть пустым"}, status=400)
+                return Response({"detail": t("conversations.contact_name_empty")}, status=400)
            setattr(contact, field, value)
            changed.append(field)
        if changed:
@@ -86,7 +87,7 @@ class ClientMergeView(ConversationViewBase):
    def _owner_only(self, request: Request) -> Response | None:
        membership = request.tenant_context.membership
        if membership is None or membership.role != EmployeeRole.OWNER:
-            return Response({"detail": "Объединять контакты может только владелец"}, status=403)
+            return Response({"detail": t("sales.merge_owner_only")}, status=403)
        return None

    def post(self, request: Request, contact_id: int) -> Response:
@@ -7,11 +7,23 @@ from chatballs.conversations.models import (
    MessageAuthor,
    MessageKind,
 )
+from chatballs.i18n import t
 from chatballs.identity.avatars import user_avatar_url_in
 from chatballs.integrations.features import features_payload
 from chatballs.integrations.models import IntegrationProvider


+def _system_text(message: Message) -> str:
+    params = message.system_params or {}
+    # Вид звонка приходит кодом (AUDIO/VIDEO): слово для него — тоже в каталоге.
+    if params.get("kind"):
+        params = {**params, "kind": t(f"calls.kind_{str(params['kind']).lower()}")}
+    rendered = t(f"conversations.system.{message.system_event}", **params)
+    # Ключа нет в каталоге — t вернул сам ключ; тогда честнее показать то, что
+    # записано, чем служебный код.
+    return message.text if rendered.startswith("conversations.system.") else rendered
+
+
 def message_payload(message: Message) -> dict[str, object]:
    payload = {
        "id": message.id,
@@ -21,7 +33,14 @@ def message_payload(message: Message) -> dict[str, object]:
        "authorName": (message.author_user.full_name or message.author_user.email) if message.author_user_id and message.author_user else "",
        "authorAvatarUrl": user_avatar_url_in(message.author_user, message.organization_id) if message.author_user_id and message.author_user else None,
        "kind": message.kind,
-        "text": message.text,
+        # Системное событие собирается по коду на языке запроса: историю
+        # диалога читают оба — и русскоязычный оператор, и англоязычный, — а
+        # записана она один раз. Код без перевода и записи, сделанные до его
+        # появления, приходят сохранённым текстом.
+        "text": _system_text(message) if message.system_event else message.text,
+        # Код нужен интерфейсу ещё и для тона строки: передача — предупреждение,
+        # взятие — акцент. Раньше тон угадывался регуляркой по русским словам.
+        "systemEvent": message.system_event,
        "contentHtml": message.content_html,
        "createdAt": message.created_at.isoformat(),
    }
@@ -11,18 +11,13 @@ from chatballs.conversations.models import (
    Message,
    MessageAuthor,
    MessageKind,
+    SystemEvent,
 )
+from chatballs.i18n import customer_language, t
 from chatballs.identity.models import EmployeeRole
 from chatballs.integrations.models import IntegrationProvider
 from chatballs.tenancy.context import TenantContext

-CONTACT_REQUEST_TEXT = "Поделитесь, пожалуйста, контактом — нажмите кнопку ниже."
-
-CONTACT_REQUEST_TEXT_WEB = "Поделитесь, пожалуйста, номером телефона."
-
-
-
-

 class ClaimError(Exception):

@@ -36,7 +31,7 @@ def _require_open(conversation: Conversation) -> None:

    if conversation.lifecycle != LifecycleState.OPEN:

-        raise ClaimError("Диалог закрыт")
+        raise ClaimError(t("conversations.closed"))



@@ -76,7 +71,7 @@ def claim_locked_conversation(*, context: TenantContext, conversation: Conversat

    if operator is None or conversation.organization_id != context.organization_id:

-        raise ClaimError("Диалог недоступен")
+        raise ClaimError(t("conversations.unavailable"))

    _require_open(conversation)

@@ -98,7 +93,7 @@ def claim_locked_conversation(*, context: TenantContext, conversation: Conversat

    ):

-        raise ClaimError("Диалог уже ведёт другой оператор")
+        raise ClaimError(t("calls.conversation_taken"))

    conversation.control_mode = ControlMode.HUMAN

@@ -114,6 +109,10 @@ def claim_locked_conversation(*, context: TenantContext, conversation: Conversat

        author_type=MessageAuthor.SYSTEM,

+        system_event=SystemEvent.OPERATOR_TOOK,
+
+        system_params={"operator": _operator_label(operator)},
+
        text=f"Оператор {_operator_label(operator)} перехватил диалог",

    )
@@ -140,7 +139,7 @@ def release_to_ai(*, context: TenantContext, conversation_id: int) -> Conversati

    if agent is None or not agent.is_active:

-        raise ClaimError("У канала нет активного AI-агента")
+        raise ClaimError(t("channels.no_active_agent"))

    conversation.control_mode = ControlMode.AI

@@ -150,7 +149,12 @@ def release_to_ai(*, context: TenantContext, conversation_id: int) -> Conversati

    conversation.save(update_fields=["control_mode", "assigned_operator", "expected_responder"])

-    Message.objects.create(conversation=conversation, author_type=MessageAuthor.SYSTEM, text="Диалог возвращён AI")
+    Message.objects.create(
+        conversation=conversation,
+        author_type=MessageAuthor.SYSTEM,
+        system_event=SystemEvent.RETURNED_TO_AI,
+        text="Диалог возвращён AI",
+    )

    return conversation

@@ -180,7 +184,12 @@ def return_to_queue(*, context: TenantContext, conversation_id: int) -> Conversa

    conversation.save(update_fields=["control_mode", "assigned_operator", "expected_responder"])

-    Message.objects.create(conversation=conversation, author_type=MessageAuthor.SYSTEM, text="Диалог возвращён в очередь")
+    Message.objects.create(
+        conversation=conversation,
+        author_type=MessageAuthor.SYSTEM,
+        system_event=SystemEvent.RETURNED_TO_QUEUE,
+        text="Диалог возвращён в очередь",
+    )

    return conversation

@@ -258,7 +267,9 @@ def request_contact(*, context: TenantContext, conversation: Conversation) -> Me

    is_web = conversation.connection_id and conversation.connection.provider == IntegrationProvider.WEB

-    text = CONTACT_REQUEST_TEXT_WEB if is_web else CONTACT_REQUEST_TEXT
+    key = "conversations.contact_request_web" if is_web else "conversations.contact_request"
+
+    text = t(key, language=customer_language(conversation.organization))

    message = Message.objects.create(

@@ -21,6 +21,7 @@ from chatballs.conversations.models import (
    LifecycleState,
    Message,
 )
+from chatballs.i18n import t

 _ACTIVE_WINDOW = timedelta(minutes=15)
 _WEEKDAYS = ["Пн", "Вт", "Ср", "Чт", "Пт", "Сб", "Вс"]
@@ -126,7 +127,7 @@ def sales_overview_stats(context, period: str) -> dict:
    ):
        minutes = int((now - conversation.last_activity_at).total_seconds() // 60)
        meta = conversation.channel.name
-        title = (conversation.contact.name if conversation.contact_id else "") or "Гость"
+        title = (conversation.contact.name if conversation.contact_id else "") or t("conversations.guest")
        problems.append(
            {
                "conversationId": conversation.id,
@@ -0,0 +1,59 @@
+"""Поиск по переписке на обоих языках идёт одной конфигурацией — «russian».
+
+Выглядит как недосмотр: англоязычная установка ищет по своим письмам русской
+конфигурацией. На деле «russian» в PostgreSQL — не «русский стеммер на всё», а
+карта по типу токена: латиница уходит в english_stem, кириллица — в
+russian_stem. То есть английские слова уже стеммятся английским стеммером.
+
+Обратное неверно, и это здесь же проверяется: «english» отдаёт кириллицу
+english_stem и оставляет её без основы. Поэтому второй индекс под английский не
+нужен, а замена конфигурации на «english» была бы регрессом для русской
+переписки. Тест стоит затем, чтобы это не «починили» ещё раз.
+"""
+
+from __future__ import annotations
+
+from django.db import connection
+from django.test import TestCase
+
+from chatballs.conversations.models import Message
+
+
+class SearchConfigTests(TestCase):
+    def _matches(self, config: str, text: str, query: str) -> bool:
+        with connection.cursor() as cursor:
+            cursor.execute(
+                "SELECT to_tsvector(%s, %s) @@ websearch_to_tsquery(%s, %s)",
+                [config, text, config, query],
+            )
+            return cursor.fetchone()[0]
+
+    def test_russian_config_stems_english_words(self) -> None:
+        self.assertTrue(self._matches("russian", "the deliveries arrived", "delivery"))
+        self.assertTrue(self._matches("russian", "we are shipping orders", "shipped"))
+
+    def test_russian_config_stems_russian_words(self) -> None:
+        self.assertTrue(self._matches("russian", "заказы доставлены", "заказ"))
+
+    def test_english_config_leaves_russian_words_unstemmed(self) -> None:
+        # Ровно причина, по которой конфигурация не переключается по языку
+        # организации: на английской конфигурации «заказы» не находит «заказ».
+        self.assertFalse(self._matches("english", "заказы доставлены", "заказ"))
+
+    def test_messages_are_indexed_with_the_same_configuration(self) -> None:
+        # Конфигурация входит в выражение индекса: разойдись она с запросом —
+        # поиск ушёл бы в полный скан. Читаем определение из самой базы, а не
+        # из питоновского объекта: в базе лежит то, что реально применится.
+        with connection.cursor() as cursor:
+            cursor.execute(
+                "SELECT indexdef FROM pg_indexes WHERE indexname = %s",
+                ["conv_message_text_fts"],
+            )
+            row = cursor.fetchone()
+        self.assertIsNotNone(row, "индекс полнотекстового поиска не создан")
+        self.assertIn("'russian'", row[0])
+        self.assertEqual(
+            [i.name for i in Message._meta.indexes if "fts" in i.name],
+            ["conv_message_text_fts"],
+            "второй индекс под язык не нужен: «russian» уже покрывает латиницу",
+        )
@@ -1,6 +1,7 @@
 from chatballs.conversations.transports import email as _email
 from chatballs.conversations.transports import max as _max
 from chatballs.conversations.transports import telegram as _telegram
+from chatballs.i18n import t
 from chatballs.integrations.models import IntegrationProvider

 _POLL = {
@@ -114,7 +115,7 @@ def download_file(integration, inbound_file) -> tuple[bytes, str]:
        return content, inbound_file.content_type or guessed
    if integration.provider == IntegrationProvider.MAX and inbound_file.url:
        return _max.download_file(integration, inbound_file.url, inbound_file.content_type)
-    raise ValueError("File download is not supported for this provider")
+    raise ValueError(t("conversations.file_download_unsupported"))


 def supports_file_send(integration) -> bool:
@@ -143,7 +144,7 @@ def download_voice(integration, inbound) -> tuple[bytes, str]:
        return _telegram.download_voice(integration, inbound.voice_file_id)
    if integration.provider == IntegrationProvider.MAX and inbound.voice_url:
        return _max.download_voice(integration, inbound.voice_url)
-    raise ValueError("Voice download is not supported for this provider")
+    raise ValueError(t("conversations.voice_download_unsupported"))


 def supports_voice_send(integration) -> bool:
@@ -10,6 +10,7 @@ from dataclasses import dataclass, field

 from django.conf import settings

+from chatballs.i18n import t
 from chatballs.integrations.outbound import ensure_downloadable
 from chatballs.integrations.proxy import build_opener

@@ -104,7 +105,7 @@ def download_bytes(
    with opener.open(request, timeout=settings.CHATBALLS_AI_REQUEST_TIMEOUT) as response:
        data = response.read(max_bytes + 1)
    if len(data) > max_bytes:
-        raise ValueError("Файл больше допустимого размера")
+        raise ValueError(t("conversations.file_too_large"))
    return data


@@ -26,6 +26,7 @@ from chatballs.conversations.transports.base import (
    guess_content_type,
    safe_filename,
 )
+from chatballs.i18n import customer_language, t

 logger = logging.getLogger(__name__)

@@ -194,7 +195,8 @@ def send_text(integration, *, chat_id: str, user_id: str, text: str, attachments
    outgoing["From"] = _address(integration)
    outgoing["To"] = target
    subject = str(meta.get("subject", "")).strip()
-    outgoing["Subject"] = f"Re: {subject}" if subject and not subject.lower().startswith("re:") else (subject or "Re: Ваше обращение")
+    default_subject = t("conversations.email_default_subject", language=customer_language(integration.organization))
+    outgoing["Subject"] = f"Re: {subject}" if subject and not subject.lower().startswith("re:") else f"Re: {subject or default_subject}"
    last_message_id = str(meta.get("last_message_id", "")).strip()
    if last_message_id:
        outgoing["In-Reply-To"] = last_message_id
@@ -223,8 +225,10 @@ def send_text(integration, *, chat_id: str, user_id: str, text: str, attachments
 def send_voice(integration, *, chat_id: str, user_id: str, content: bytes, content_type: str, duration: int) -> bool:
    """Голосовое оператора уходит письмом с аудио-вложением."""
    suffix = "ogg" if "ogg" in content_type else (content_type.rsplit("/", 1)[-1] or "webm").split(";")[0]
-    return send_text(integration, chat_id=chat_id, user_id=user_id, text="Голосовое сообщение", attachments=[(content, f"voice.{suffix}", content_type)])
+    text = t("conversations.voice_message", language=customer_language(integration.organization))
+    return send_text(integration, chat_id=chat_id, user_id=user_id, text=text, attachments=[(content, f"voice.{suffix}", content_type)])


 def send_file(integration, *, chat_id: str, user_id: str, content: bytes, filename: str, content_type: str, caption: str = "") -> bool:
-    return send_text(integration, chat_id=chat_id, user_id=user_id, text=caption or f"Файл: {filename}", attachments=[(content, filename, content_type)])
+    text = caption or t("conversations.file_caption", name=filename, language=customer_language(integration.organization))
+    return send_text(integration, chat_id=chat_id, user_id=user_id, text=text, attachments=[(content, filename, content_type)])
@@ -27,6 +27,7 @@ from chatballs.conversations.transports.base import (
    request_json_multipart,
    safe_filename,
 )
+from chatballs.i18n import customer_language, t
 from chatballs.integrations.checks import DEFAULT_MAX_BASE_URL
 from chatballs.integrations.outbound import host_of

@@ -271,11 +272,17 @@ def send_text(integration, *, chat_id: str, user_id: str, text: str) -> bool:
    return _send(integration, chat_id=chat_id, user_id=user_id, body={"text": text})


+def _caption(integration, key: str) -> str:
+    """Подпись кнопки читает клиент — язык организации, а не язык запроса."""
+
+    return t(key, language=customer_language(integration.organization))
+
+
 def send_contact_request(integration, *, chat_id: str, user_id: str, text: str) -> bool:
    # Inline-клавиатура с кнопкой request_contact (Bot API MAX/TamTam).
    keyboard = {
        "type": "inline_keyboard",
-        "payload": {"buttons": [[{"type": "request_contact", "text": "Поделиться контактом"}]]},
+        "payload": {"buttons": [[{"type": "request_contact", "text": _caption(integration, "conversations.button_share_contact")}]]},
    }
    return _send(integration, chat_id=chat_id, user_id=user_id, body={"text": text, "attachments": [keyboard]})

@@ -284,7 +291,7 @@ def send_call_invite(integration, *, chat_id: str, user_id: str, text: str, url:
    # Приглашение на онлайн-звонок: inline-кнопка со ссылкой /calls/<token>.
    keyboard = {
        "type": "inline_keyboard",
-        "payload": {"buttons": [[{"type": "link", "text": "Перейти к звонку", "url": url}]]},
+        "payload": {"buttons": [[{"type": "link", "text": _caption(integration, "conversations.button_join_call"), "url": url}]]},
    }
    return _send(integration, chat_id=chat_id, user_id=user_id, body={"text": text, "attachments": [keyboard]})

@@ -23,6 +23,7 @@ from chatballs.conversations.transports.base import (
    request_json_multipart,
    safe_filename,
 )
+from chatballs.i18n import customer_language, t
 from chatballs.integrations.checks import DEFAULT_TELEGRAM_BASE_URL
 from chatballs.integrations.outbound import host_of

@@ -152,10 +153,16 @@ def send_text(integration, *, chat_id: str, user_id: str, text: str) -> bool:
    return _send(integration, chat_id=chat_id, user_id=user_id, body={"text": text})


+def _caption(integration, key: str) -> str:
+    """Подпись кнопки читает клиент — язык организации, а не язык запроса."""
+
+    return t(key, language=customer_language(integration.organization))
+
+
 def send_contact_request(integration, *, chat_id: str, user_id: str, text: str) -> bool:
    # Reply-клавиатура с request_contact: телефон бот получает только так.
    keyboard = {
-        "keyboard": [[{"text": "Поделиться контактом", "request_contact": True}]],
+        "keyboard": [[{"text": _caption(integration, "conversations.button_share_contact"), "request_contact": True}]],
        "one_time_keyboard": True,
        "resize_keyboard": True,
    }
@@ -169,7 +176,7 @@ def send_contact_ack(integration, *, chat_id: str, user_id: str, text: str) -> b

 def send_call_invite(integration, *, chat_id: str, user_id: str, text: str, url: str) -> bool:
    # Приглашение на онлайн-звонок: inline-кнопка со ссылкой /calls/<token>.
-    keyboard = {"inline_keyboard": [[{"text": "Перейти к звонку", "url": url}]]}
+    keyboard = {"inline_keyboard": [[{"text": _caption(integration, "conversations.button_join_call"), "url": url}]]}
    return _send(integration, chat_id=chat_id, user_id=user_id, body={"text": text, "reply_markup": keyboard})


@@ -182,7 +189,7 @@ def download_file(integration, file_id: str) -> tuple[bytes, str]:
    )
    file_path = ((data.get("result") or {}).get("file_path") or "")
    if not data.get("ok") or not file_path:
-        raise ValueError("Telegram getFile failed")
+        raise ValueError(t("conversations.telegram_getfile_failed"))
    content = download_bytes(
        f"{_base(integration)}/file/bot{token}/{file_path}",
        proxy_url=_proxy(integration),
@@ -226,7 +233,7 @@ def download_voice(integration, file_id: str) -> tuple[bytes, str]:
    )
    file_path = ((data.get("result") or {}).get("file_path") or "")
    if not data.get("ok") or not file_path:
-        raise ValueError("Telegram getFile failed")
+        raise ValueError(t("conversations.telegram_getfile_failed"))
    content = download_bytes(
        f"{_base(integration)}/file/bot{token}/{file_path}",
        proxy_url=_proxy(integration),
@@ -39,6 +39,7 @@ from chatballs.conversations.services import (
    return_to_queue,
 )
 from chatballs.conversations.view_base import ConversationViewBase
+from chatballs.i18n import t
 from chatballs.identity.group_models import EmployeeGroup
 from chatballs.identity.models import OrganizationMembership
 from chatballs.identity.policy import ResourceScope, authorize, can_administer_access
@@ -58,7 +59,7 @@ class ConversationListView(ConversationViewBase):
        # «Удалённые» (архив) скрыты; просмотр архива — только администратор.
        if params.get("archived") == "1":
            if not can_administer_access(request.tenant_context.membership):
-                return Response({"detail": "Архив доступен администраторам"}, status=403)
+                return Response({"detail": t("conversations.archive_admin_only")}, status=403)
            items = items.filter(archived_at__isnull=False)
        else:
            items = items.filter(archived_at__isnull=True)
@@ -92,7 +93,11 @@ class ConversationListView(ConversationViewBase):
            from django.db.models import Exists, OuterRef

            # Имена — по подстроке; тексты сообщений — полнотекстовым поиском
-            # (russian-конфиг, GIN-индекс conv_message_text_fts).
+            # (russian-конфиг, GIN-индекс conv_message_text_fts). Конфигурация
+            # одна на оба языка и от языка организации не зависит: в «russian»
+            # латиница отдана english_stem, а кириллица — russian_stem, так что
+            # английская переписка стеммится английским стеммером. Менять её на
+            # «english» нельзя — та оставит без основы русские слова.
            search = SearchQuery(query, config="russian", search_type="websearch")
            message_match = (
                Message.objects.filter(conversation=OuterRef("pk"))
@@ -145,7 +150,7 @@ class ConversationDetailView(ConversationViewBase):
        try:
            conversation = self._conversation(request, conversation_id)
        except Conversation.DoesNotExist:
-            return Response({"detail": "Диалог не найден"}, status=404)
+            return Response({"detail": t("conversations.not_found")}, status=404)
        # Открытие диалога = прочтение: двигаем персональную отметку до последнего
        # сообщения (detail поллится каждые 3 с — пишем только при продвижении).
        last_id = conversation.messages.order_by("-id").values_list("id", flat=True).first() or 0
@@ -174,7 +179,7 @@ class ConversationClaimView(ConversationViewBase):
        try:
            self._conversation(request, conversation_id, self.required_capability)
        except Conversation.DoesNotExist:
-            return Response({"detail": "Диалог не найден"}, status=404)
+            return Response({"detail": t("conversations.not_found")}, status=404)
        try:
            conversation = claim_conversation(
                context=request.tenant_context, conversation_id=conversation_id
@@ -200,7 +205,7 @@ class ConversationReleaseView(ConversationViewBase):
        try:
            self._conversation(request, conversation_id, self.required_capability)
        except Conversation.DoesNotExist:
-            return Response({"detail": "Диалог не найден"}, status=404)
+            return Response({"detail": t("conversations.not_found")}, status=404)
        try:
            conversation = release_to_ai(
                context=request.tenant_context, conversation_id=conversation_id
@@ -226,7 +231,7 @@ class ConversationReturnQueueView(ConversationViewBase):
        try:
            self._conversation(request, conversation_id, self.required_capability)
        except Conversation.DoesNotExist:
-            return Response({"detail": "Диалог не найден"}, status=404)
+            return Response({"detail": t("conversations.not_found")}, status=404)
        try:
            conversation = return_to_queue(
                context=request.tenant_context, conversation_id=conversation_id
@@ -264,7 +269,7 @@ def claim_for_reply(view: ConversationViewBase, request: Request, conversation:
        ResourceScope(conversation.organization_id),
    )
    if conversation.assigned_operator_id != request.user.id and not manager_override:
-        return Response({"detail": "Диалог ведёт другой оператор"}, status=409)
+        return Response({"detail": t("conversations.handled_by_other")}, status=409)
    return conversation


@@ -284,7 +289,7 @@ class ConversationMessageView(ConversationViewBase):
        try:
            conversation = self._conversation(request, conversation_id)
        except Conversation.DoesNotExist:
-            return Response({"detail": "Диалог не найден"}, status=404)
+            return Response({"detail": t("conversations.not_found")}, status=404)
        params = request.query_params
        limit = window_size(params, default=MESSAGE_WINDOW_SIZE)
        messages = conversation_messages(conversation)
@@ -313,12 +318,12 @@ class ConversationMessageView(ConversationViewBase):
        try:
            conversation = self._conversation(request, conversation_id, self.required_capability)
        except Conversation.DoesNotExist:
-            return Response({"detail": "Диалог не найден"}, status=404)
+            return Response({"detail": t("conversations.not_found")}, status=404)
        text = str(request.data.get("text", "")).strip()
        if not text:
-            return Response({"detail": "Пустое сообщение"}, status=400)
+            return Response({"detail": t("ai.empty_message")}, status=400)
        if conversation.lifecycle != LifecycleState.OPEN:
-            return Response({"detail": "Диалог закрыт"}, status=409)
+            return Response({"detail": t("conversations.closed")}, status=409)
        claimed = claim_for_reply(self, request, conversation)
        if isinstance(claimed, Response):
            return claimed
@@ -339,13 +344,13 @@ class ConversationRequestContactView(ConversationViewBase):
        try:
            conversation = self._conversation(request, conversation_id, self.required_capability)
        except Conversation.DoesNotExist:
-            return Response({"detail": "Диалог не найден"}, status=404)
+            return Response({"detail": t("conversations.not_found")}, status=404)
        if not conversation.contact_id or not conversation.connection_id:
-            return Response({"detail": "У диалога нет канала для запроса контакта"}, status=409)
+            return Response({"detail": t("conversations.no_channel_for_contact")}, status=409)
        if conversation.lifecycle != LifecycleState.OPEN:
-            return Response({"detail": "Диалог закрыт"}, status=409)
+            return Response({"detail": t("conversations.closed")}, status=409)
        if conversation.contact.phone:
-            return Response({"detail": "Контакт уже получен"}, status=409)
+            return Response({"detail": t("conversations.contact_already_received")}, status=409)
        try:
            message = request_contact(
                context=request.tenant_context,
@@ -364,7 +369,7 @@ class ConversationCloseView(ConversationViewBase):
        try:
            self._conversation(request, conversation_id, self.required_capability)
        except Conversation.DoesNotExist:
-            return Response({"detail": "Диалог не найден"}, status=404)
+            return Response({"detail": t("conversations.not_found")}, status=404)
        try:
            conversation = close_conversation(
                context=request.tenant_context, conversation_id=conversation_id
@@ -390,7 +395,7 @@ class ConversationSpamView(ConversationViewBase):
        try:
            self._conversation(request, conversation_id, self.required_capability)
        except Conversation.DoesNotExist:
-            return Response({"detail": "Диалог не найден"}, status=404)
+            return Response({"detail": t("conversations.not_found")}, status=404)
        try:
            conversation = mark_conversation_as_spam(
                context=request.tenant_context, conversation_id=conversation_id
@@ -418,7 +423,7 @@ class ConversationGroupView(ConversationViewBase):
        try:
            conversation = self._conversation(request, conversation_id, self.required_capability)
        except Conversation.DoesNotExist:
-            return Response({"detail": "Диалог не найден"}, status=404)
+            return Response({"detail": t("conversations.not_found")}, status=404)
        group_id = request.data.get("groupId")
        group = None
        if group_id is not None:
@@ -426,7 +431,7 @@ class ConversationGroupView(ConversationViewBase):
                organization_id=conversation.organization_id, id=group_id
            ).first()
            if group is None:
-                return Response({"detail": "Группа не найдена"}, status=400)
+                return Response({"detail": t("admin.group_not_found")}, status=400)
        conversation.group = group
        conversation.save(update_fields=["group"])
        self._audit(request, "group_changed", conversation)
@@ -448,7 +453,7 @@ class ConversationAssigneeView(ConversationViewBase):
        try:
            conversation = self._conversation(request, conversation_id, self.required_capability)
        except Conversation.DoesNotExist:
-            return Response({"detail": "Диалог не найден"}, status=404)
+            return Response({"detail": t("conversations.not_found")}, status=404)
        user_id = request.data.get("userId")
        assignee = None
        if user_id is not None:
@@ -462,7 +467,7 @@ class ConversationAssigneeView(ConversationViewBase):
                .first()
            )
            if membership is None:
-                return Response({"detail": "Сотрудник не найден"}, status=400)
+                return Response({"detail": t("admin.employee_not_found")}, status=400)
            assignee = membership.user
        conversation.assigned_operator = assignee
        conversation.save(update_fields=["assigned_operator"])
@@ -29,6 +29,7 @@ from chatballs.conversations.models import (
 from chatballs.conversations.selectors import conversation_for_context
 from chatballs.conversations.serializers import message_payload
 from chatballs.conversations.view_base import ConversationViewBase
+from chatballs.i18n import t
 from chatballs.integrations.features import voice_messages_allowed
 from chatballs.tenancy.database import tenant_atomic

@@ -53,9 +54,9 @@ class MessageAudioView(ConversationViewBase):
        try:
            message = _visible_message(request, message_id)
        except (Message.DoesNotExist, Conversation.DoesNotExist):
-            return Response({"detail": "Сообщение не найдено"}, status=404)
+            return Response({"detail": t("conversations.message_not_found")}, status=404)
        if not message.audio:
-            return Response({"detail": "Аудио недоступно"}, status=404)
+            return Response({"detail": t("conversations.audio_unavailable")}, status=404)
        return FileResponse(
            message.audio.open("rb"),
            content_type=message.audio_content_type or "application/octet-stream",
@@ -86,9 +87,9 @@ class MessageTranscribeView(ConversationViewBase):
            try:
                message = _visible_message(request, message_id)
            except (Message.DoesNotExist, Conversation.DoesNotExist):
-                return Response({"detail": "Сообщение не найдено"}, status=404)
+                return Response({"detail": t("conversations.message_not_found")}, status=404)
            if message.kind != MessageKind.VOICE or not message.audio:
-                return Response({"detail": "Это не голосовое сообщение"}, status=400)
+                return Response({"detail": t("conversations.not_a_voice_message")}, status=400)
            if message.transcript_status == TranscriptStatus.READY:
                return Response({"message": message_payload(message)})
            try:
@@ -97,7 +98,7 @@ class MessageTranscribeView(ConversationViewBase):
                mark_transcription_failed(message)
                return Response({"detail": str(error)}, status=502)
            if job is None:
-                return Response({"detail": "Аудио недоступно"}, status=404)
+                return Response({"detail": t("conversations.audio_unavailable")}, status=404)

        try:
            transcript = run_transcription(job)
@@ -110,7 +111,7 @@ class MessageTranscribeView(ConversationViewBase):
            store_transcription(message, transcript)
            payload = message_payload(message)
        if not transcript:
-            return Response({"detail": "Провайдер вернул пустую расшифровку"}, status=502)
+            return Response({"detail": t("ai.empty_transcript")}, status=502)
        return Response({"message": payload})


@@ -129,24 +130,24 @@ class ConversationVoiceView(ConversationViewBase):
                request, conversation_id, self.required_capability
            )
        except Conversation.DoesNotExist:
-            return Response({"detail": "Диалог не найден"}, status=404)
+            return Response({"detail": t("conversations.not_found")}, status=404)
        if conversation.lifecycle != LifecycleState.OPEN:
-            return Response({"detail": "Диалог закрыт"}, status=409)
+            return Response({"detail": t("conversations.closed")}, status=409)
        connection = conversation.connection
        if connection is None or not transports.supports_voice_send(connection):
            return Response(
-                {"detail": "Голосовые сообщения недоступны в этом канале"}, status=400
+                {"detail": t("conversations.voice_unavailable_channel")}, status=400
            )
        if not voice_messages_allowed(connection):
-            return Response({"detail": "Голосовые отключены для этой точки входа"}, status=400)
+            return Response({"detail": t("conversations.voice_off_entry_point")}, status=400)
        upload = request.FILES.get("audio")
        if upload is None:
-            return Response({"detail": "Прикрепите аудио"}, status=400)
+            return Response({"detail": t("conversations.attach_audio")}, status=400)
        if upload.size > MAX_VOICE_BYTES:
-            return Response({"detail": "Аудио больше 10 МБ"}, status=400)
+            return Response({"detail": t("conversations.audio_too_large")}, status=400)
        content_type = (upload.content_type or "audio/ogg").split(";")[0]
        if content_type not in ALLOWED_AUDIO_TYPES:
-            return Response({"detail": "Неподдерживаемый формат аудио"}, status=400)
+            return Response({"detail": t("conversations.audio_format_unsupported")}, status=400)
        try:
            duration = max(0, int(request.data.get("duration", 0)))
        except (TypeError, ValueError):
@@ -169,7 +170,7 @@ class ConversationVoiceView(ConversationViewBase):
        )
        if not sent:
            return Response(
-                {"detail": "Не удалось отправить голосовое в канал"}, status=502
+                {"detail": t("conversations.voice_send_failed")}, status=502
            )
        message = Message.objects.create(
            conversation=conversation,
@@ -0,0 +1,33 @@
+"""Язык интерфейса: выбор языка запроса и каталог сообщений."""
+
+from chatballs.i18n.audience import customer_language
+from chatballs.i18n.catalog import current_language, t, tn
+from chatballs.i18n.languages import (
+    DEFAULT_LANGUAGE,
+    ENGLISH,
+    INHERIT,
+    LANGUAGE_CODES,
+    LANGUAGES,
+    RUSSIAN,
+    first_chosen,
+    normalize_language,
+    parse_accept_language,
+    resolve_language,
+)
+
+__all__ = [
+    "DEFAULT_LANGUAGE",
+    "ENGLISH",
+    "INHERIT",
+    "LANGUAGES",
+    "LANGUAGE_CODES",
+    "RUSSIAN",
+    "current_language",
+    "customer_language",
+    "first_chosen",
+    "normalize_language",
+    "parse_accept_language",
+    "resolve_language",
+    "t",
+    "tn",
+]
@@ -0,0 +1,24 @@
+"""Язык текста, который уходит наружу — клиенту, а не сотруднику.
+
+Язык запроса здесь не годится. Приглашение на звонок, просьба поделиться
+контактом, тема исходящего письма — это речь организации, обращённая к её
+клиенту, и она не должна менять язык от того, кто из операторов нажал кнопку.
+Часть такого текста вообще рождается в воркере, где запроса нет.
+
+Поэтому берём язык организации, а если она его не задавала — язык установки.
+Язык самого клиента нам неизвестен: в Telegram, MAX и почте его сообщить
+нечему, а в веб-виджете он выбирается на стороне страницы.
+"""
+
+from __future__ import annotations
+
+from chatballs.i18n.languages import INHERIT, first_chosen, normalize_language
+
+
+def customer_language(organization: object) -> str:
+    """Язык обращения организации к клиенту. Пусто — язык по умолчанию."""
+
+    from chatballs.identity.instance_settings import default_language
+
+    organization_language = normalize_language(getattr(organization, "language", INHERIT))
+    return first_chosen(organization_language, default_language())
@@ -0,0 +1,97 @@
+"""Каталог сообщений и перевод строки под язык запроса.
+
+Переводы лежат обычными питоновскими словарями, а не в .po: продукт ставят
+одной командой из готового образа, и лишний бинарный шаг сборки (msgfmt) в этой
+цепочке нечем оправдать. Django и DRF свои строки при этом продолжают
+переводить штатно — язык запроса активируется через ``translation.activate``,
+и их скомпилированные каталоги подхватываются как обычно.
+
+Русский каталог — источник истины: ключ появляется сначала в нём. Английский
+обязан повторять его набор ключей один в один, это проверяется тестом, а не
+глазами. Пропущенный перевод не роняет запрос: строка выходит по-русски, и это
+видно, тогда как исключение в середине ответа не видно никому.
+"""
+
+from __future__ import annotations
+
+from typing import Final
+
+from django.utils.translation import get_language
+
+from chatballs.i18n.languages import DEFAULT_LANGUAGE, normalize_language
+from chatballs.i18n.messages import CATALOG
+
+# Форма множественного числа по правилам CLDR. Русскому нужны четыре («1 диалог»,
+# «2 диалога», «5 диалогов», «1,5 диалога»), английскому — две, и код, который
+# просто клеит «s», на русском не работает ни в одной строке.
+PluralForms = dict[str, str]
+Message = str | PluralForms
+
+_OTHER: Final = "other"
+
+
+def _plural_category(language: str, count: int | float) -> str:
+    if language == "ru":
+        if count != int(count):
+            return _OTHER
+        i = abs(int(count))
+        if i % 10 == 1 and i % 100 != 11:
+            return "one"
+        if i % 10 in (2, 3, 4) and i % 100 not in (12, 13, 14):
+            return "few"
+        return "many"
+    # Английский и всё, что добавят следом с двумя формами.
+    if count == 1 and count == int(count):
+        return "one"
+    return _OTHER
+
+
+def _lookup(key: str, language: str) -> Message | None:
+    table = CATALOG.get(language)
+    if table is not None and key in table:
+        return table[key]
+    if language != DEFAULT_LANGUAGE:
+        fallback = CATALOG.get(DEFAULT_LANGUAGE)
+        if fallback is not None and key in fallback:
+            return fallback[key]
+    return None
+
+
+def current_language() -> str:
+    """Язык, активированный для этого запроса (или язык по умолчанию)."""
+
+    return normalize_language(get_language()) or DEFAULT_LANGUAGE
+
+
+def t(key: str, /, language: str | None = None, **params: object) -> str:
+    """Строка каталога на языке запроса, с подстановкой ``{имя}``.
+
+    Неизвестный ключ возвращается как есть. Это заметно в интерфейсе, но не
+    ломает ответ: опечатка в ключе не должна превращать сохранение настроек в
+    пятисотую.
+    """
+
+    code = normalize_language(language) or current_language()
+    message = _lookup(key, code)
+    if message is None:
+        return key
+    if isinstance(message, dict):
+        message = message.get(_OTHER, key)
+    return message.format(**params) if params else message
+
+
+def tn(key: str, count: int | float, /, language: str | None = None, **params: object) -> str:
+    """Строка с числом: форма выбирается по правилам языка.
+
+    ``count`` подставляется в ``{count}`` без отдельного указания, потому что
+    строка с числом без самого числа не нужна ни разу.
+    """
+
+    code = normalize_language(language) or current_language()
+    message = _lookup(key, code)
+    if message is None:
+        return key
+    if isinstance(message, dict):
+        category = _plural_category(code, count)
+        message = message.get(category) or message.get(_OTHER) or key
+    return message.format(count=count, **params)
@@ -0,0 +1,113 @@
+"""Языки интерфейса и правило, по которому запрос выбирает свой.
+
+Язык не выводится из окружения и не задаётся переменной: его выбирает человек.
+Владелец задаёт язык организации — на нём рабочее место открывается всем, кто
+в неё вошёл; отдельный сотрудник может переопределить его в профиле, и тогда
+организация ему не указ. До входа организации ещё нет, и язык берётся из
+настроек установки: на нём показываются логин, сброс пароля и мастер первого
+запуска.
+"""
+
+from __future__ import annotations
+
+from typing import Final
+
+RUSSIAN: Final = "ru"
+ENGLISH: Final = "en"
+
+# Порядок важен: первый язык — тот, на котором написан исходный каталог и на
+# который приходится фолбэк, когда перевода нет.
+LANGUAGES: Final[tuple[tuple[str, str], ...]] = (
+    (RUSSIAN, "Русский"),
+    (ENGLISH, "English"),
+)
+
+LANGUAGE_CODES: Final[tuple[str, ...]] = tuple(code for code, _ in LANGUAGES)
+DEFAULT_LANGUAGE: Final = RUSSIAN
+
+# Пустая строка в профиле сотрудника означает «как в организации», а в
+# организации — «как в установке». Это не язык, а отсутствие выбора, поэтому
+# отдельного значения в LANGUAGES у неё нет.
+INHERIT: Final = ""
+
+
+def normalize_language(value: object) -> str:
+    """Привести код к поддерживаемому языку или вернуть INHERIT.
+
+    Принимает и «ru-RU», и «RU», и «ru_ru»: браузер, операционная система и
+    заголовок Accept-Language пишут регион по-разному, а выбор один и тот же.
+    Неизвестный язык — не ошибка: это просьба, которую нечем удовлетворить, и
+    она сводится к «как выше по цепочке».
+    """
+
+    if not isinstance(value, str):
+        return INHERIT
+    code = value.strip().replace("_", "-").lower()
+    if not code:
+        return INHERIT
+    base = code.partition("-")[0]
+    return base if base in LANGUAGE_CODES else INHERIT
+
+
+def parse_accept_language(header: str | None) -> str:
+    """Первый поддерживаемый язык из Accept-Language, иначе INHERIT.
+
+    Заголовок разбирается по убыванию q-веса: «en;q=0.9, ru» означает русский,
+    хотя английский стоит первым.
+    """
+
+    if not header:
+        return INHERIT
+    weighted: list[tuple[float, int, str]] = []
+    for position, part in enumerate(header.split(",")):
+        token, _, params = part.strip().partition(";")
+        code = normalize_language(token)
+        if not code:
+            continue
+        quality = 1.0
+        for param in params.split(";"):
+            key, _, raw = param.strip().partition("=")
+            if key.strip() == "q":
+                try:
+                    quality = float(raw)
+                except ValueError:
+                    quality = 0.0
+        weighted.append((-quality, position, code))
+    if not weighted:
+        return INHERIT
+    weighted.sort()
+    return weighted[0][2]
+
+
+def first_chosen(*candidates: str) -> str:
+    """Первый уровень цепочки, который язык действительно выбрал.
+
+    Возвращает INHERIT, если не выбрал ни один: вызывающий по этому признаку
+    решает, спрашивать ли следующий уровень. Нужно там, где следующий уровень
+    стоит запроса к базе, — незачем его читать, если выбор уже сделан.
+    """
+
+    for candidate in candidates:
+        code = normalize_language(candidate)
+        if code:
+            return code
+    return INHERIT
+
+
+def resolve_language(
+    *,
+    user_language: str = INHERIT,
+    organization_language: str = INHERIT,
+    instance_language: str = INHERIT,
+    accept_language: str | None = None,
+) -> str:
+    """Язык одного запроса: от личного выбора к общему умолчанию.
+
+    Порядок фиксированный — профиль, организация, установка, браузер. Браузер
+    стоит последним и работает только до входа: после входа язык человека уже
+    известен, и подстраиваться под ноутбук, с которого он сегодня зашёл, не
+    нужно.
+    """
+
+    chosen = first_chosen(user_language, organization_language, instance_language)
+    return chosen or parse_accept_language(accept_language) or DEFAULT_LANGUAGE
@@ -0,0 +1,14 @@
+"""Сборка каталога: русский — источник истины, английский обязан его повторить.
+
+Ключ пишется как «модуль.смысл» и не повторяет саму фразу: строку правят чаще,
+чем переименовывают, и ключ вида «identity.email_taken» переживает
+переформулировку, а «identity.email_already_used» — нет.
+"""
+
+from __future__ import annotations
+
+from chatballs.i18n.messages import en, ru
+
+CATALOG: dict[str, dict[str, object]] = {"ru": ru.MESSAGES, "en": en.MESSAGES}
+
+__all__ = ["CATALOG"]
@@ -0,0 +1,534 @@
+"""English catalogue. Mirrors ru.py key for key (checked by tests)."""
+
+from __future__ import annotations
+
+MESSAGES: dict[str, object] = {
+    "admin.choose_logo_file": "Choose a logo file",
+    "admin.currency_rub_only": "Only the Russian rouble (RUB) is supported",
+    "admin.employee_not_found": "Operator not found",
+    "admin.group_name_taken": "A group with this name already exists",
+    "admin.group_not_found": "Group not found",
+    "admin.invalid_timezone": "Enter a valid time zone",
+    "admin.logo_not_uploaded": "No logo has been uploaded",
+    "admin.multi_org_self_reset": "This operator belongs to several organizations — they reset the password themselves through access recovery",
+    "admin.name_too_long": "The name must not exceed 255 characters",
+    "admin.organization_name_required": "Enter the organization name",
+    "admin.photo_not_found": "Photo not found",
+    "ai.agent_not_found": "Agent not found",
+    "ai.demo_no_transcription": "Voice transcription is not available on the demo provider: connect OpenRouter or a compatible provider under Settings.",
+    "ai.empty_message": "The message is empty",
+    "ai.empty_transcript": "The provider returned an empty transcript",
+    "ai.provider_not_configured": "No AI provider is configured: a call without a channel cannot pick an integration",
+    "api.window_needs_sort_key": "a window needs at least one sort key",
+    "calls.invite_invalid": "The invitation is not valid or has expired",
+    "calls.kind_audio": "an audio call",
+    "calls.kind_invalid": "Unsupported call type",
+    "calls.kind_required": "Choose the call type",
+    "calls.kind_video": "a video call",
+    "calls.not_found": "Call not found",
+    "calls.token_invalid": "The call access token is not valid or has expired",
+    "channels.binding_needs_manage": "Binding a connection requires integrations.manage",
+    "channels.cannot_delete_linked": "The channel cannot be deleted: it has related records",
+    "channels.no_rights_to_change": "No rights to change the channel",
+    "conversations.archive_admin_only": "The archive is available to administrators",
+    "conversations.attach_audio": "Attach audio",
+    "conversations.attach_file": "Attach a file",
+    "conversations.audio_format_unsupported": "Unsupported audio format",
+    "conversations.audio_too_large": "The audio is over 10 MB",
+    "conversations.audio_unavailable": "The audio is unavailable",
+    "conversations.closed": "The conversation is closed",
+    "conversations.contact_already_received": "The contact details have already been received",
+    "conversations.contact_name_empty": "The contact name cannot be empty",
+    "conversations.file_send_failed": "Could not send the file to the channel",
+    "conversations.file_too_large": "The file is larger than allowed",
+    "conversations.file_unavailable": "The file is unavailable",
+    "conversations.files_unavailable_channel": "Files are not available on this channel",
+    "conversations.guest": "Guest",
+    "conversations.handled_by_other": "Another operator is handling this conversation",
+    "conversations.invalid_colour": "Invalid colour",
+    "conversations.label_name_length": "Label name: 1-60 characters",
+    "conversations.label_not_found": "Label not found",
+    "conversations.message_not_found": "Message not found",
+    "conversations.no_channel_for_contact": "The conversation has no channel to request contact details through",
+    "conversations.no_contact": "The conversation has no contact",
+    "conversations.not_a_voice_message": "This is not a voice message",
+    "conversations.not_found": "Conversation not found",
+    "conversations.note_too_long": "The note is longer than 4000 characters",
+    "conversations.restore_admin_only": "Only an administrator can restore a conversation",
+    "conversations.system.ai_handed_over": "AI handed the conversation to an operator",
+    "conversations.system.ai_unavailable": "AI is unavailable — the conversation was handed to an operator",
+    "conversations.system.call_accepted": "The customer accepted the call invitation",
+    "conversations.system.call_cancelled": "The operator cancelled the call invitation",
+    "conversations.system.call_declined": "The customer declined the call invitation",
+    "conversations.system.call_ended": "Call ended · {duration}",
+    "conversations.system.call_expired": "The call invitation expired",
+    "conversations.system.call_failed": "The call did not go through",
+    "conversations.system.call_missed": "Call missed: the customer did not answer",
+    "conversations.system.call_requested": "{operator} requested {kind}",
+    "conversations.system.call_started": "The call started: the connection is up",
+    "conversations.system.operator_took": "{operator} took over the conversation",
+    "conversations.system.returned_to_ai": "The conversation was handed back to AI",
+    "conversations.system.returned_to_queue": "The conversation was returned to the queue",
+    "conversations.template_name_length": "Template name: 1-120 characters",
+    "conversations.template_name_taken": "A template with this name already exists",
+    "conversations.template_not_found": "Template not found",
+    "conversations.template_text_required": "The template text is required",
+    "conversations.unknown_label": "Unknown label",
+    "conversations.unknown_priority": "Unknown priority",
+    "conversations.voice_off_entry_point": "Voice messages are switched off for this entry point",
+    "conversations.voice_send_failed": "Could not send the voice message to the channel",
+    "conversations.voice_unavailable_channel": "Voice messages are not available on this channel",
+    "emails.initial_access_body": "Hello {name},\n\nA Chatballs account has been created for you. To set your first password, follow this link:\n{url}\n\nThe link is valid for 30 minutes. If you were not expecting this email, contact your organization's owner.",
+    "emails.initial_access_subject": "Your Chatballs access",
+    "emails.password_reset_body": "Hello {name},\n\nYou asked to reset your Chatballs password. To set a new one, follow this link:\n{url}\n\nThe link is valid for 30 minutes. If you did not ask for a reset, simply ignore this email.",
+    "emails.password_reset_subject": "Chatballs access recovery",
+    "identity.link_invalid_or_expired": "The link is not valid or has expired",
+    "identity.password_needs_digit": "The password must contain a digit.",
+    "identity.password_needs_letter": "The password must contain a letter.",
+    "identity.password_needs_special": "The password must contain a special character.",
+    "identity.setup_already_done": "The first run is already complete: the organization exists",
+    "notifications.ai_error": "AI error · {channel}",
+    "notifications.ai_handed_over": "AI handed over the conversation · {contact}",
+    "notifications.ai_unavailable_handed_over": "AI is temporarily unavailable; the conversation was handed to an operator",
+    "notifications.ai_unavailable_waiting": "AI is temporarily unavailable; the conversation is waiting for an answer",
+    "notifications.new_dialog": "New conversation · {channel}",
+    "notifications.new_dialog_body": "{contact} · {provider}: {preview}",
+    "notifications.new_message": "New message · {contact}",
+    "notifications.operator_needed": "An operator is needed · {contact}",
+    "notifications.voice_without_transcript": "A voice message without a transcript",
+    "portals.article_not_found": "Article not found",
+    "portals.file_field_required": "A file is required in the file field (multipart/form-data)",
+    "portals.file_not_found": "File not found",
+    "portals.helpful_must_be_boolean": "helpful must be a boolean",
+    "portals.invalid_article": "Invalid article",
+    "portals.invalid_article_data": "Invalid article data",
+    "portals.invalid_category": "Invalid category",
+    "portals.invalid_domain": "Invalid domain name",
+    "portals.invalid_pagination": "Invalid pagination",
+    "portals.invalid_revision": "Invalid revision",
+    "portals.invalid_section": "Invalid section",
+    "portals.not_found": "Portal not found",
+    "portals.section_not_found": "Section not found",
+    "profile.accent_hex": "The accent is a HEX colour like #1677ff",
+    "profile.choose_photo_file": "Choose a photo file",
+    "profile.link_not_found": "Link not found",
+    "profile.notification_bot_not_found": "Notification bot not found",
+    "profile.photo_not_set": "No photo is set",
+    "profile.totp_already_on": "TOTP is already on: turn it off with your current password first",
+    "profile.unknown_theme": "Unknown theme",
+    "sales.already_merged": "This contact is already merged with another — unmerge it first",
+    "sales.already_unmerged": "This merge has already been undone",
+    "sales.client_not_found": "Customer not found",
+    "sales.contact_not_found": "Contact not found",
+    "sales.merge_not_found": "Merge not found",
+    "sales.merge_owner_only": "Only the owner can merge contacts",
+    "sales.merge_reason_required": "Give a reason for the merge — it goes into the action log",
+    "sales.merge_self": "A contact cannot be merged with itself",
+    "settings.address_required": "Enter the installation address",
+    "settings.enable_s3_first": "Switch on and save S3 storage first",
+    "settings.entry_point_not_found": "Entry point not found",
+    "settings.http_or_https": "http or https",
+    "settings.integration_not_found": "Integration not found",
+    "settings.invalid_address": "Invalid address",
+    "settings.items_list_expected": "A list of items is expected",
+    "settings.language_unsupported": "This language is not supported",
+    "settings.migration_running": "A migration is already running",
+    "settings.port_is_number": "The port is a number",
+    "settings.s3_not_configured": "S3 is not configured",
+    "settings.smtp_required_first": "Set the outgoing mail server first",
+    "settings.socks_needs_pysocks": "A SOCKS proxy needs the PySocks dependency (pip install PySocks)",
+    "settings.storages_missing": "django-storages[s3] is not installed",
+    "settings.ttl_is_seconds": "The lifetime is a number of seconds",
+    "settings.unknown_storage_kind": "Unknown storage type",
+    "webchat.invalid_phone": "Invalid phone number",
+    "webchat.no_active_invite": "No active invitation found",
+    "webchat.session_not_found": "Session not found",
+    "webchat.voice_off": "Voice messages are switched off",
+    "webchat.widget_unavailable": "The widget is unavailable",
+    "webchat.write_in_max": "Write on MAX",
+    "webchat.write_in_telegram": "Write on Telegram",
+    "audit.action_access_assignment_created": "Access assigned to an operator",
+    "audit.action_administration_communication_updated": "Voice and calls changed",
+    "audit.action_administration_instance_updated": "Platform settings changed",
+    "audit.action_administration_logo_deleted": "Organization logo removed",
+    "audit.action_administration_logo_updated": "Organization logo changed",
+    "audit.action_administration_organization_updated": "Organization details changed",
+    "audit.action_administration_storage_migration_requested": "File migration started",
+    "audit.action_administration_storage_updated": "File storage changed",
+    "audit.action_ai_agent_category_knowledge_selected": "Category knowledge selected for an agent",
+    "audit.action_ai_agent_created": "Agent created",
+    "audit.action_ai_agent_knowledge_attached": "Knowledge attached to an agent",
+    "audit.action_ai_agent_knowledge_detached": "Knowledge detached from an agent",
+    "audit.action_ai_agent_portal_articles_attached": "Portal articles attached to an agent",
+    "audit.action_ai_agent_portal_articles_detached": "Portal articles detached from an agent",
+    "audit.action_ai_agent_status_changed": "Agent status changed",
+    "audit.action_ai_knowledge_attachment_added": "Knowledge attachment added",
+    "audit.action_ai_knowledge_attachment_deleted": "Knowledge attachment deleted",
+    "audit.action_ai_knowledge_category_created": "Knowledge category created",
+    "audit.action_ai_knowledge_category_deleted": "Knowledge category deleted",
+    "audit.action_ai_knowledge_category_updated": "Knowledge category changed",
+    "audit.action_ai_knowledge_created": "Knowledge item added",
+    "audit.action_ai_knowledge_deleted": "Knowledge item deleted",
+    "audit.action_ai_knowledge_imported": "Knowledge imported",
+    "audit.action_ai_knowledge_reindexed": "Knowledge item reindexed",
+    "audit.action_ai_knowledge_updated": "Knowledge item changed",
+    "audit.action_calls_cancelled": "Call cancelled",
+    "audit.action_calls_requested": "Call requested",
+    "audit.action_channels_channel_created": "Channel created",
+    "audit.action_channels_channel_deleted": "Channel deleted",
+    "audit.action_channels_channel_updated": "Channel changed",
+    "audit.action_channels_connection_bound": "Connection bound to an agent",
+    "audit.action_contacts_merged": "Contacts merged",
+    "audit.action_contacts_unmerged": "Contacts unmerged",
+    "audit.action_conversation_contact_updated": "Conversation contact changed",
+    "audit.action_conversations_archived": "Conversation moved to the archive",
+    "audit.action_conversations_assignee_changed": "Conversation assignee changed",
+    "audit.action_conversations_claimed": "Conversation taken",
+    "audit.action_conversations_closed": "Conversation closed",
+    "audit.action_conversations_contact_requested": "Customer contact details requested",
+    "audit.action_conversations_contact_updated": "Conversation contact changed",
+    "audit.action_conversations_file_sent": "File sent to the conversation",
+    "audit.action_conversations_group_changed": "Conversation group changed",
+    "audit.action_conversations_marked_spam": "Conversation marked as spam",
+    "audit.action_conversations_priority_changed": "Conversation priority changed",
+    "audit.action_conversations_released_to_ai": "Conversation handed back to AI",
+    "audit.action_conversations_returned_to_queue": "Conversation returned to the queue",
+    "audit.action_conversations_unarchived": "Conversation restored from the archive",
+    "audit.action_conversations_voice_sent": "Voice message sent to the conversation",
+    "audit.action_demo_install_requested": "Demo data installation requested",
+    "audit.action_demo_installed": "Demo data installed",
+    "audit.action_demo_installed_accounts": "Demo operator accounts created",
+    "audit.action_demo_remove_requested": "Demo data removal requested",
+    "audit.action_demo_removed": "Demo data removed",
+    "audit.action_identity_access_assignment_created": "Access assigned to an operator",
+    "audit.action_identity_access_assignment_revoked": "Operator access revoked",
+    "audit.action_identity_access_profile_created": "Access profile created",
+    "audit.action_identity_access_profile_updated": "Access profile changed",
+    "audit.action_identity_avatar_deleted": "Profile photo removed",
+    "audit.action_identity_avatar_updated": "Profile photo changed",
+    "audit.action_identity_employee_blocked": "Operator blocked",
+    "audit.action_identity_employee_created": "Operator added",
+    "audit.action_identity_employee_groups_changed": "Operator groups changed",
+    "audit.action_identity_employee_password_reset": "Operator password reset",
+    "audit.action_identity_employee_privileged_action_denied": "Privileged action denied",
+    "audit.action_identity_employee_role_changed": "Operator role changed",
+    "audit.action_identity_employee_sessions_terminated": "Operator sessions ended",
+    "audit.action_identity_employee_unblocked": "Operator unblocked",
+    "audit.action_identity_employee_updated": "Operator changed",
+    "audit.action_identity_group_created": "Group created",
+    "audit.action_identity_group_deleted": "Group deleted",
+    "audit.action_identity_group_updated": "Group changed",
+    "audit.action_identity_instance_setup_completed": "First-run wizard completed",
+    "audit.action_identity_login_failed": "Failed sign-in",
+    "audit.action_identity_login_succeeded": "Signed in",
+    "audit.action_identity_login_totp_required": "Two-factor code requested",
+    "audit.action_identity_logout": "Signed out",
+    "audit.action_identity_owner_bootstrapped": "Installation owner created",
+    "audit.action_identity_ownership_transferred": "Organization ownership transferred",
+    "audit.action_identity_password_reset_completed": "Password recovered",
+    "audit.action_identity_password_reset_failed": "Failed password reset",
+    "audit.action_identity_password_reset_requested": "Password reset requested",
+    "audit.action_identity_profile_language_changed": "Interface language changed",
+    "audit.action_identity_profile_password_changed": "Password changed",
+    "audit.action_identity_profile_sessions_revoked": "Own sessions ended",
+    "audit.action_identity_profile_totp_disabled": "Two-factor authentication turned off",
+    "audit.action_identity_profile_totp_setup_started": "Two-factor setup started",
+    "audit.action_identity_profile_updated": "Operator profile changed",
+    "audit.action_identity_temporary_password_changed": "Temporary password changed",
+    "audit.action_identity_totp_enabled": "Two-factor authentication turned on",
+    "audit.action_identity_totp_setup_failed": "Two-factor setup failed",
+    "audit.action_identity_totp_verify_failed": "Wrong two-factor code",
+    "audit.action_integrations_integration_created": "Integration added",
+    "audit.action_integrations_integration_deleted": "Integration deleted",
+    "audit.action_integrations_integration_updated": "Integration changed",
+    "audit.action_organization_owner_activated": "Organization owner activated",
+    "audit.action_organization_owner_invitation_requested": "Owner invitation sent",
+    "audit.action_organization_provisioned": "Organization created",
+    "audit.action_support_portal_articles_imported": "Portal articles imported",
+    "audit.action_support_portal_created": "Portal created",
+    "audit.action_support_portal_draft": "Portal unpublished",
+    "audit.action_support_portal_published": "Portal published",
+    "audit.category_access_assignment": "Access and operators",
+    "audit.category_administration": "Settings",
+    "audit.category_ai": "AI and knowledge",
+    "audit.category_calls": "Calls",
+    "audit.category_channels": "Channels",
+    "audit.category_contacts": "Contacts",
+    "audit.category_conversation": "Conversations",
+    "audit.category_conversations": "Conversations",
+    "audit.category_demo": "Demo data",
+    "audit.category_identity": "Access and operators",
+    "audit.category_integrations": "Integrations",
+    "audit.category_organization": "Organization",
+    "audit.category_support_portal": "Portals",
+    "audit.object_accessassignment": "Access assignment",
+    "audit.object_accessprofile": "Access profile",
+    "audit.object_agentcard": "Agent",
+    "audit.object_channel": "Channel",
+    "audit.object_contact": "Contact",
+    "audit.object_conversation": "Conversation",
+    "audit.object_employeegroup": "Group",
+    "audit.object_humanuser": "Operator",
+    "audit.object_instancesettings": "Installation",
+    "audit.object_integration": "Integration",
+    "audit.object_knowledge": "Knowledge item",
+    "audit.object_knowledgecategory": "Knowledge category",
+    "audit.object_organization": "Organization",
+    "audit.object_storagesettings": "Storage",
+    "audit.object_supportportal": "Portal",
+    "audit.result_denied": "Denied",
+    "audit.result_failed": "Failed",
+    "audit.result_success": "Succeeded",
+    "audit.category_other": "Other",
+    "audit.result_unknown": "Unknown",
+    "ai.agent_code_collision": "Could not find a unique agent code",
+    "ai.pick_provider_first": "Pick the organization's provider to start AI",
+    "calls.already_ended": "The call has already ended",
+    "calls.cannot_cancel": "The call can no longer be cancelled",
+    "calls.conversation_outside_groups": "The conversation is outside the operator's groups",
+    "calls.conversation_taken": "Another operator is already handling this conversation",
+    "calls.identity_missing_or_ambiguous": "The call's customer identity is missing or ambiguous",
+    "calls.invite_cannot_accept": "The invitation can no longer be accepted",
+    "calls.invite_cannot_decline": "The invitation can no longer be declined",
+    "calls.no_access": "No access to calls",
+    "calls.no_client_identity": "The conversation has no customer identity to call",
+    "calls.not_a_participant": "The operator is not a participant of this call",
+    "calls.only_in_open_conversation": "A call can only be requested in an open conversation",
+    "calls.operator_busy": "The operator is already on another call",
+    "calls.operator_context_required": "A call needs an operator context",
+    "calls.second_call_rejected": "A second unfinished call could not be created",
+    "calls.transition_forbidden": "Transition {current} -> {target} is not allowed",
+    "calls.unfinished_call_exists": "The conversation already has an unfinished call",
+    "channels.no_active_agent": "The channel has no active AI agent",
+    "conversations.unavailable": "The conversation is unavailable",
+    "admin.action_not_allowed_for_employee": "You cannot perform this action on this employee",
+    "admin.email_required": "Email is required",
+    "admin.email_taken": "Email is already used",
+    "admin.full_name_required": "Full name is required",
+    "admin.invalid_role": "Invalid role",
+    "admin.not_allowed": "Not allowed",
+    "admin.previous_owner_role": "Previous owner role must be ADMIN or EMPLOYEE",
+    "admin.target_must_be_active": "Target must be an active employee",
+    "admin.temporary_passwords_unsupported": "Temporary passwords are not supported",
+    "admin.unknown_password_mode": "Unknown password mode",
+    "ai.attachment_not_found": "Attachment not found",
+    "ai.category_not_found": "Category not found",
+    "ai.documents_non_empty": "documents must be a non-empty list",
+    "ai.file_required": "file is required (multipart/form-data)",
+    "ai.group_id_integer_or_null": "groupId must be an integer or null",
+    "ai.group_id_or_none": "group must be an id or none",
+    "ai.history_must_be_list": "history must be a list",
+    "ai.integration_id_integer": "integrationId must be an integer",
+    "ai.knowledge_not_found": "Knowledge not found",
+    "ai.title_required": "Title is required",
+    "conversations.archived_boolean": "archived must be a boolean",
+    "conversations.label_ids_list": "labelIds must be a list of ids",
+    "identity.invalid_credentials": "Invalid credentials",
+    "identity.invalid_totp_code": "Invalid TOTP code",
+    "identity.invitation_email_mismatch": "Invitation email does not match the account",
+    "identity.invitation_invalid": "Invitation is invalid or has expired",
+    "identity.role_conflict": "User already has a different role in this organization",
+    "identity.token_required": "token is required",
+    "identity.totp_challenge_inactive": "TOTP challenge is not active",
+    "notifications.ids_list_or_all": "ids must be a list or use all=true",
+    "notifications.push_types_list": "pushTypes must be a list",
+    "platform.idempotency_key_required": "Idempotency-Key header is required",
+    "portals.articles_non_empty": "articles must be a non-empty list",
+    "profile.current_password_invalid": "Current password is invalid",
+    "profile.totp_enabled_already": "TOTP is already enabled",
+    "profile.totp_required_by_policy": "TOTP is required by an organization policy",
+    "ai.provider_error": "Provider error: {error}",
+    "conversations.activity_closed": "Conversation closed · {channel}",
+    "conversations.activity_started": "Conversation · {channel}",
+    "conversations.field_too_long": "Field {field}: no longer than {limit} characters",
+    "ai.provider_no_transcription": "The {provider} provider does not support audio transcription",
+    "ai.transcription_failed": "Transcription failed: {error}",
+    "ai.transcription_failed_http": "Transcription failed: HTTP {code} {detail}",
+    "api.expected_integer": "{name}: an integer is expected",
+    "api.expected_positive": "{name}: a number greater than zero is expected",
+    "api.expected_record_id": "{name}: a record identifier is expected",
+    "settings.storage_unavailable": "The storage is unavailable: {error}",
+    "admin.actor_system": "System",
+    "admin.image_formats": "PNG, JPEG and WebP are supported",
+    "admin.logo_too_large": "The logo must not exceed 2 MB",
+    "calls.calls_off_entry_point": "Calls are switched off for this entry point",
+    "calls.failure_code_required": "FAILED needs a normalized failure_code",
+    "calls.video_off_entry_point": "Video calls are switched off for this entry point",
+    "channels.archived_channel_binding": "A connection cannot be bound to an archived channel",
+    "channels.connection_not_bound": "The connection is not bound to a channel",
+    "channels.connection_not_found": "Connection not found",
+    "channels.llm_is_not_a_connection": "An LLM provider is not a channel connection",
+    "channels.name_required": "The channel name cannot be empty",
+    "channels.name_too_long": "The channel name is longer than 255 characters",
+    "portals.a_record_mismatch": "The domain's A record does not point at the Chatballs server",
+    "portals.a_record_missing": "The domain's A record has not appeared yet",
+    "portals.anonymous_widget_missing": "No active anonymous support web widget was found",
+    "portals.archived_article_publish": "An archived article cannot be published",
+    "portals.archived_article_readonly": "An archived article cannot be edited",
+    "portals.domain_empty_check": "An empty domain cannot be verified",
+    "portals.domain_is_internal": "The internal application domain cannot be used",
+    "portals.domain_required_first": "Set the domain first",
+    "portals.domain_same_as_installation": "A custom domain must differ from the Chatballs address",
+    "portals.domain_taken": "This domain is already used by another portal",
+    "portals.file_name_required": "The file name is required",
+    "portals.file_too_large": "The file is over 25 MB",
+    "portals.invalid_theme_id": "Invalid theme identifier",
+    "portals.invalid_theme_scheme": "Unknown theme colour scheme",
+    "portals.invalid_theme_setting_name": "Invalid theme setting name",
+    "portals.move_articles_first": "Move the articles out of this section first",
+    "portals.move_nested_sections_first": "Move or delete the nested sections first",
+    "portals.other_organization": "The portal belongs to another organization",
+    "portals.restore_to_edit_content": "Restore the portal to change its content",
+    "portals.restore_to_edit_domain": "Restore the portal to change its domain",
+    "portals.restore_to_edit_settings": "Restore the portal to change its settings",
+    "portals.restore_to_verify_domain": "Restore the portal to verify its domain",
+    "portals.revision_not_found": "Article revision not found",
+    "portals.slug_taken": "This address is already used by another portal",
+    "portals.theme_settings_json": "Theme settings must be a JSON object",
+    "portals.theme_settings_object": "Theme settings must be an object",
+    "portals.theme_settings_too_large": "The theme settings are too large",
+    "portals.unknown_status": "Unknown portal status",
+    "portals.widget_channel_missing": "The web widget channel was not found",
+    "profile.photo_too_large": "The photo must not exceed 2 MB",
+    "settings.local_or_s3": "LOCAL or S3",
+    "settings.object_written_not_readable": "The object was written but cannot be read — check the read permissions",
+    "settings.seconds_number": "A number of seconds",
+    "admin.group_name_required": "Group name is required",
+    "ai.agent_other_organization": "Agent belongs to another organization",
+    "ai.archived_agent_state": "Archived AI agent cannot change state",
+    "ai.at_least_one_knowledge_id": "At least one knowledge ID is required",
+    "ai.attachment_other_organization": "Attachment belongs to another organization",
+    "ai.category_cycle": "Category cycle is not allowed",
+    "ai.category_name_required": "Category name is required",
+    "ai.category_names_strings": "Category names must be non-empty strings",
+    "ai.category_other_organization": "Category belongs to another organization",
+    "ai.category_path_not_found": "Category path not found",
+    "ai.category_path_required": "Non-empty category path required",
+    "ai.category_with_children": "Category with children cannot be deleted",
+    "ai.category_with_knowledge": "Category with knowledge cannot be deleted",
+    "ai.channel_required": "Channel is required",
+    "ai.content_required": "Content string is required",
+    "ai.description_string": "Description must be a string",
+    "ai.document_object_required": "Document must be an object",
+    "ai.expected_attach_or_detach": "Expected attach or detach",
+    "ai.file_name_required": "File name is required",
+    "ai.file_too_large_25": "File is too large (max 25 MB)",
+    "ai.integration_model_required": "Integration default model is required",
+    "ai.knowledge_ids_integers": "Knowledge IDs must be integers",
+    "ai.knowledge_other_organization": "Knowledge belongs to another organization",
+    "ai.knowledge_unknown_or_unavailable": "Unknown or unavailable knowledge item",
+    "ai.list_of_ids": "List of IDs required",
+    "ai.list_of_knowledge_ids": "List of knowledge IDs required",
+    "ai.parent_category_not_found": "Parent category not found",
+    "ai.parent_category_other_organization": "Parent category belongs to another organization",
+    "ai.system_category_immutable": "System category is immutable",
+    "ai.system_category_name_immutable": "System category name is immutable",
+    "ai.system_category_undeletable": "System category cannot be deleted",
+    "ai.unknown_knowledge_item": "Unknown knowledge item",
+    "ai.unknown_portal_article": "Unknown portal article",
+    "ai.unknown_provider_integration": "Unknown OpenRouter or Custom integration",
+    "api.at_least_one_id": "At least one ID is required",
+    "api.boolean_required": "Boolean required",
+    "api.integer_id_required": "Integer id required",
+    "api.integer_required": "Integer required",
+    "api.list_of_ids_required": "List of ids required",
+    "api.object_required": "Object required",
+    "api.positive_id_required": "Positive integer ID required",
+    "channels.agent_exists": "Channel already has an AI agent",
+    "channels.not_found": "Channel not found",
+    "channels.unknown_group": "Unknown group",
+    "conversations.file_download_unsupported": "File download is not supported for this provider",
+    "conversations.telegram_getfile_failed": "Telegram getFile failed",
+    "conversations.voice_download_unsupported": "Voice download is not supported for this provider",
+    "portals.article_object_required": "Article must be an object",
+    "portals.locale_string": "Locale must be a string",
+    "portals.summary_string": "Summary must be a string",
+    "portals.widget_channel_mismatch": "Widget and legacy channel must match",
+    "portals.widget_needs_anonymous": "Portal widget must allow anonymous web sessions",
+    "portals.widget_needs_channel": "Portal widget must be bound to a channel",
+    "settings.allowed_origins_list": "allowedOrigins must be a list of strings",
+    "settings.api_key_required": "Custom API key is required",
+    "settings.custom_base_url_required": "Custom Base URL is required",
+    "settings.custom_model_required": "Custom model is required",
+    "settings.email_hosts_required": "Email address, IMAP host and SMTP host are required",
+    "settings.email_not_a_bot": "Email cannot be a notifications bot",
+    "settings.inactive_channel": "Inactive channel cannot accept connections",
+    "settings.integration_other_organization": "Integration belongs to another organization",
+    "settings.mailbox_password_required": "Mailbox password is required",
+    "settings.name_required": "Name required",
+    "settings.ports_numbers": "Ports must be numbers",
+    "settings.quick_replies_list": "quickReplies must be a list of strings",
+    "settings.unknown_provider": "Unknown provider",
+    "ai.field_required": "The field “{field}” is required",
+    "ai.unexpected_provider_response": "Unexpected provider response: {error}",
+    "settings.base_url_rejected": "Base URL: {error}",
+    "settings.proxy_url_rejected": "Proxy: {error}",
+    "notifications.type_dialog_waiting": "A dialog is waiting for an operator",
+    "notifications.type_dialog_new_message": "A new message in a dialog",
+    "notifications.type_release_published": "An agent release was published",
+    "notifications.type_integration_error": "Integration error",
+    "integrations.check_no_connection": "No connection: {error}",
+    "integrations.check_api_key_missing": "The API key is not set",
+    "integrations.check_base_url_missing": "Base URL is not set",
+    "integrations.check_bot_token_missing": "The bot token is not set",
+    "integrations.check_mailbox_password_missing": "The mailbox password is not set",
+    "integrations.check_mail_hosts_missing": "The address, IMAP host or SMTP host is missing",
+    "integrations.check_provider_answered": "{provider} answered {status}",
+    "integrations.check_endpoint_answered": "The endpoint answered {status}",
+    "integrations.check_key_accepted": "the key was accepted",
+    "integrations.check_bot_connected": "the bot is connected",
+    "integrations.check_demo": "Demo provider: answers from the agent's knowledge, with no external calls or keys",
+    "integrations.check_unsupported": "Checking is not supported for this connection type",
+    "integrations.check_web_not_bound": "The connection is not bound to a channel — the widget is inactive",
+    "integrations.check_web_no_config": "The web widget configuration has not been created",
+    "integrations.check_web_no_origins": "No allowed domains are set — the widget will be unavailable on the site",
+    "integrations.check_web_active": "The web widget is active · channel “{channel}”",
+    "integrations.check_endpoint_models": {"one": "The endpoint answers: {count} model", "other": "The endpoint answers: {count} models"},
+    "identity.password_help": "The password must contain a letter, a digit and a special character.",
+    "conversations.attachment_too_large": "The file is over 20 MB",
+    "conversations.attachment_empty": "The file is empty",
+    "conversations.attachment_type_blocked": "This file type cannot be sent",
+    "settings.s3_bucket_required": "Enter the bucket name",
+    "settings.s3_endpoint_scheme": "The address must start with http:// or https://",
+    "settings.s3_access_key_required": "Enter the Access Key",
+    "settings.s3_secret_key_required": "Enter the Secret Key",
+    "channels.binding_conflict": "The connection is already bound to another channel: moving it requires force",
+    "channels.operation_needs_manage": "{operation} requires channels.manage",
+    "channels.operation_status_change": "Changing the channel status",
+    "channels.operation_policy_change": "Changing the channel policy",
+    "conversations.dialog_status_closed": "Closed",
+    "conversations.dialog_status_operator": "Operator",
+    "conversations.dialog_status_wait": "Waiting for an operator",
+    "setup.your_name_required": "Enter your name",
+    "setup.your_name_too_long": "The name is longer than 255 characters",
+    "setup.email_invalid": "Enter a valid e-mail address",
+    "setup.check_fields": "Check the fields you filled in",
+    "setup.owner_position": "Owner",
+    "ai.agent_without_llm_integration": "The agent is not bound to a BYOK LLM integration; choose a provider in the agent settings",
+    "ai.integration_is_not_llm": "The “{provider}” integration is not a BYOK LLM provider",
+    "settings.url_scheme_required": "The address must start with one of these schemes: {schemes}",
+    "settings.download_http_only": "Downloads are only allowed over http/https",
+    "settings.url_points_inside": "The address points into the internal network",
+    "settings.scheme_forbidden": "The {scheme} scheme is not allowed in outgoing requests",
+    "conversations.contact_request": "Please share your contact — tap the button below.",
+    "conversations.contact_request_web": "Please share your phone number.",
+    "calls.invite_text": "You are invited to {kind}. Tap the button to join the call.",
+    "conversations.email_default_subject": "Your request",
+    "conversations.voice_message": "Voice message",
+    "conversations.file_caption": "File: {name}",
+    "webchat.default_greeting": "Hello! Happy to help and answer your questions. What can we do for you?",
+    "webchat.default_consent": "By continuing you agree that your messages are processed to answer your request.",
+    "webchat.guest_name": "Guest · {code}",
+    "channels.operation_agent_create": "Creating an agent",
+    "channels.operation_agent_delete": "Deleting an agent",
+    "identity.browser_unknown": "Browser",
+    "settings.mail_test_subject": "Chatballs mail check",
+    "settings.mail_test_body": "This is a test message from Settings. If you are reading it, the installation's mail works.",
+    "notifications.binding_done": "Done! Chatballs notifications are connected. You can turn them off in your profile.",
+    "notifications.binding_hint": "This is the Chatballs notification bot. To connect notifications, open your profile in Chatballs and press “Connect”.",
+    "conversations.button_share_contact": "Share contact",
+    "conversations.button_join_call": "Join the call",
+    "ai.demo_handover": "I'll check this with my colleagues and hand the dialog to a member of staff — they will answer during working hours.",
+    "ai.demo_handover_suffix": " I'm handing the dialog to a member of staff — they will help from here.",
+    "ai.unknown_answer_language": "Unknown agent answer language",
+}
@@ -0,0 +1,538 @@
+"""Русский каталог — исходный. Ключ появляется здесь, потом в en.py.
+
+Ключи сгруппированы по модулю, которому принадлежит строка, и внутри группы
+идут по алфавиту: искать строку приходится по коду, а не по фразе.
+"""
+
+from __future__ import annotations
+
+MESSAGES: dict[str, object] = {
+    "admin.choose_logo_file": "Выберите файл логотипа",
+    "admin.currency_rub_only": "Поддерживается только российский рубль (RUB)",
+    "admin.employee_not_found": "Сотрудник не найден",
+    "admin.group_name_taken": "Группа с таким именем уже есть",
+    "admin.group_not_found": "Группа не найдена",
+    "admin.invalid_timezone": "Укажите корректный часовой пояс",
+    "admin.logo_not_uploaded": "Логотип не загружен",
+    "admin.multi_org_self_reset": "Сотрудник состоит в нескольких организациях — пароль сбрасывает он сам через восстановление доступа",
+    "admin.name_too_long": "Название не должно превышать 255 символов",
+    "admin.organization_name_required": "Укажите название организации",
+    "admin.photo_not_found": "Фото не найдено",
+    "ai.agent_not_found": "Агент не найден",
+    "ai.demo_no_transcription": "Расшифровка голосовых недоступна в демо-провайдере: подключите OpenRouter или совместимый провайдер в «Настройках».",
+    "ai.empty_message": "Пустое сообщение",
+    "ai.empty_transcript": "Провайдер вернул пустую расшифровку",
+    "ai.provider_not_configured": "AI-провайдер не настроен: вызов без канала не может выбрать интеграцию",
+    "api.window_needs_sort_key": "окно требует хотя бы один ключ сортировки",
+    "calls.invite_invalid": "Недействительное или истёкшее приглашение",
+    "calls.kind_audio": "аудиозвонок",
+    "calls.kind_invalid": "Недопустимый тип звонка",
+    "calls.kind_required": "Укажите тип звонка",
+    "calls.kind_video": "видеозвонок",
+    "calls.not_found": "Звонок не найден",
+    "calls.token_invalid": "Недействительный или истёкший call access token",
+    "channels.binding_needs_manage": "Привязка подключения требует integrations.manage",
+    "channels.cannot_delete_linked": "Канал нельзя удалить: есть связанные записи",
+    "channels.no_rights_to_change": "Нет прав на изменение канала",
+    "conversations.archive_admin_only": "Архив доступен администраторам",
+    "conversations.attach_audio": "Прикрепите аудио",
+    "conversations.attach_file": "Прикрепите файл",
+    "conversations.audio_format_unsupported": "Неподдерживаемый формат аудио",
+    "conversations.audio_too_large": "Аудио больше 10 МБ",
+    "conversations.audio_unavailable": "Аудио недоступно",
+    "conversations.closed": "Диалог закрыт",
+    "conversations.contact_already_received": "Контакт уже получен",
+    "conversations.contact_name_empty": "Имя контакта не может быть пустым",
+    "conversations.file_send_failed": "Не удалось отправить файл в канал",
+    "conversations.file_too_large": "Файл больше допустимого размера",
+    "conversations.file_unavailable": "Файл недоступен",
+    "conversations.files_unavailable_channel": "Файлы недоступны в этом канале",
+    "conversations.guest": "Гость",
+    "conversations.handled_by_other": "Диалог ведёт другой оператор",
+    "conversations.invalid_colour": "Некорректный цвет",
+    "conversations.label_name_length": "Название метки: 1-60 символов",
+    "conversations.label_not_found": "Метка не найдена",
+    "conversations.message_not_found": "Сообщение не найдено",
+    "conversations.no_channel_for_contact": "У диалога нет канала для запроса контакта",
+    "conversations.no_contact": "У диалога нет контакта",
+    "conversations.not_a_voice_message": "Это не голосовое сообщение",
+    "conversations.not_found": "Диалог не найден",
+    "conversations.note_too_long": "Заметка длиннее 4000 символов",
+    "conversations.restore_admin_only": "Восстановить диалог может только администратор",
+    "conversations.system.ai_handed_over": "AI передал диалог оператору",
+    "conversations.system.ai_unavailable": "AI недоступен — диалог передан оператору",
+    "conversations.system.call_accepted": "Клиент принял приглашение на звонок",
+    "conversations.system.call_cancelled": "Сотрудник отменил приглашение на звонок",
+    "conversations.system.call_declined": "Клиент отклонил приглашение на звонок",
+    "conversations.system.call_ended": "Звонок завершён · {duration}",
+    "conversations.system.call_expired": "Приглашение на звонок истекло",
+    "conversations.system.call_failed": "Звонок не состоялся",
+    "conversations.system.call_missed": "Звонок пропущен: клиент не ответил",
+    "conversations.system.call_requested": "Оператор {operator} запросил {kind}",
+    "conversations.system.call_started": "Звонок начался: соединение установлено",
+    "conversations.system.operator_took": "Оператор {operator} перехватил диалог",
+    "conversations.system.returned_to_ai": "Диалог возвращён AI",
+    "conversations.system.returned_to_queue": "Диалог возвращён в очередь",
+    "conversations.template_name_length": "Название шаблона: 1-120 символов",
+    "conversations.template_name_taken": "Шаблон с таким названием уже есть",
+    "conversations.template_not_found": "Шаблон не найден",
+    "conversations.template_text_required": "Текст шаблона обязателен",
+    "conversations.unknown_label": "Неизвестная метка",
+    "conversations.unknown_priority": "Неизвестный приоритет",
+    "conversations.voice_off_entry_point": "Голосовые отключены для этой точки входа",
+    "conversations.voice_send_failed": "Не удалось отправить голосовое в канал",
+    "conversations.voice_unavailable_channel": "Голосовые сообщения недоступны в этом канале",
+    "emails.initial_access_body": "Здравствуйте, {name}.\n\nДля вас создана учётная запись Chatballs. Чтобы задать пароль первичного доступа, перейдите по ссылке:\n{url}\n\nСсылка действует 30 минут. Если вы не ожидали это письмо, обратитесь к владельцу организации.",
+    "emails.initial_access_subject": "Первичный доступ к Chatballs",
+    "emails.password_reset_body": "Здравствуйте, {name}.\n\nВы запросили сброс пароля для Chatballs. Чтобы задать новый пароль, перейдите по ссылке:\n{url}\n\nСсылка действует 30 минут. Если вы не запрашивали сброс, просто проигнорируйте это письмо.",
+    "emails.password_reset_subject": "Восстановление доступа к Chatballs",
+    "identity.link_invalid_or_expired": "Ссылка недействительна или истекла",
+    "identity.password_needs_digit": "Пароль должен содержать цифру.",
+    "identity.password_needs_letter": "Пароль должен содержать букву.",
+    "identity.password_needs_special": "Пароль должен содержать спецсимвол.",
+    "identity.setup_already_done": "Первый запуск уже выполнен: организация создана",
+    "notifications.ai_error": "Ошибка AI · {channel}",
+    "notifications.ai_handed_over": "AI передал диалог · {contact}",
+    "notifications.ai_unavailable_handed_over": "AI временно недоступен, диалог передан оператору",
+    "notifications.ai_unavailable_waiting": "AI временно недоступен, диалог ждёт ответа",
+    "notifications.new_dialog": "Новый диалог · {channel}",
+    "notifications.new_dialog_body": "{contact} · {provider}: {preview}",
+    "notifications.new_message": "Новое сообщение · {contact}",
+    "notifications.operator_needed": "Нужен оператор · {contact}",
+    "notifications.voice_without_transcript": "Голосовое без расшифровки",
+    "portals.article_not_found": "Статья не найдена",
+    "portals.file_field_required": "Нужен файл в поле file (multipart/form-data)",
+    "portals.file_not_found": "Файл не найден",
+    "portals.helpful_must_be_boolean": "helpful должен быть boolean",
+    "portals.invalid_article": "Некорректная статья",
+    "portals.invalid_article_data": "Некорректные данные статьи",
+    "portals.invalid_category": "Некорректная категория",
+    "portals.invalid_domain": "Некорректное доменное имя",
+    "portals.invalid_pagination": "Некорректная пагинация",
+    "portals.invalid_revision": "Некорректная версия",
+    "portals.invalid_section": "Некорректный раздел",
+    "portals.not_found": "Портал не найден",
+    "portals.section_not_found": "Раздел не найден",
+    "profile.accent_hex": "Акцент — HEX-цвет вида #1677ff",
+    "profile.choose_photo_file": "Выберите файл фото",
+    "profile.link_not_found": "Привязка не найдена",
+    "profile.notification_bot_not_found": "Бот уведомлений не найден",
+    "profile.photo_not_set": "Фото не задано",
+    "profile.totp_already_on": "TOTP уже включена: сначала отключите её текущим паролем",
+    "profile.unknown_theme": "Неизвестная тема",
+    "sales.already_merged": "Контакт уже объединён с другим — сначала разъедините",
+    "sales.already_unmerged": "Это объединение уже разъединено",
+    "sales.client_not_found": "Клиент не найден",
+    "sales.contact_not_found": "Контакт не найден",
+    "sales.merge_not_found": "Объединение не найдено",
+    "sales.merge_owner_only": "Объединять контакты может только владелец",
+    "sales.merge_reason_required": "Укажите причину объединения — она попадёт в журнал действий",
+    "sales.merge_self": "Нельзя объединить контакт с самим собой",
+    "settings.address_required": "Укажите адрес установки",
+    "settings.enable_s3_first": "Сначала включите и сохраните S3-хранилище",
+    "settings.entry_point_not_found": "Точка входа не найдена",
+    "settings.http_or_https": "http или https",
+    "settings.integration_not_found": "Интеграция не найдена",
+    "settings.invalid_address": "Некорректный адрес",
+    "settings.items_list_expected": "Ожидается список items",
+    "settings.language_unsupported": "Этот язык не поддерживается",
+    "settings.migration_running": "Перенос уже идёт",
+    "settings.port_is_number": "Порт — число",
+    "settings.s3_not_configured": "S3 не настроено",
+    "settings.smtp_required_first": "Сначала укажите сервер исходящей почты",
+    "settings.socks_needs_pysocks": "Для SOCKS-прокси нужна зависимость PySocks (pip install PySocks)",
+    "settings.storages_missing": "django-storages[s3] не установлен",
+    "settings.ttl_is_seconds": "Время жизни — число секунд",
+    "settings.unknown_storage_kind": "Неизвестный тип хранилища",
+    "webchat.invalid_phone": "Некорректный номер телефона",
+    "webchat.no_active_invite": "Активное приглашение не найдено",
+    "webchat.session_not_found": "Сессия не найдена",
+    "webchat.voice_off": "Голосовые отключены",
+    "webchat.widget_unavailable": "Виджет недоступен",
+    "webchat.write_in_max": "Написать в MAX",
+    "webchat.write_in_telegram": "Написать в Telegram",
+    "audit.action_access_assignment_created": "Назначен доступ сотруднику",
+    "audit.action_administration_communication_updated": "Изменены голосовые и звонки",
+    "audit.action_administration_instance_updated": "Изменены настройки платформы",
+    "audit.action_administration_logo_deleted": "Удалён логотип организации",
+    "audit.action_administration_logo_updated": "Изменён логотип организации",
+    "audit.action_administration_organization_updated": "Изменены данные организации",
+    "audit.action_administration_storage_migration_requested": "Запущен перенос файлов",
+    "audit.action_administration_storage_updated": "Изменено хранилище файлов",
+    "audit.action_ai_agent_category_knowledge_selected": "Выбраны знания категории для агента",
+    "audit.action_ai_agent_created": "Создан агент",
+    "audit.action_ai_agent_knowledge_attached": "Знания подключены к агенту",
+    "audit.action_ai_agent_knowledge_detached": "Знания отключены от агента",
+    "audit.action_ai_agent_portal_articles_attached": "Статьи портала подключены к агенту",
+    "audit.action_ai_agent_portal_articles_detached": "Статьи портала отключены от агента",
+    "audit.action_ai_agent_status_changed": "Изменён статус агента",
+    "audit.action_ai_knowledge_attachment_added": "Добавлено вложение знания",
+    "audit.action_ai_knowledge_attachment_deleted": "Удалено вложение знания",
+    "audit.action_ai_knowledge_category_created": "Создана категория знаний",
+    "audit.action_ai_knowledge_category_deleted": "Удалена категория знаний",
+    "audit.action_ai_knowledge_category_updated": "Изменена категория знаний",
+    "audit.action_ai_knowledge_created": "Добавлено знание",
+    "audit.action_ai_knowledge_deleted": "Удалено знание",
+    "audit.action_ai_knowledge_imported": "Знания импортированы",
+    "audit.action_ai_knowledge_reindexed": "Знание переиндексировано",
+    "audit.action_ai_knowledge_updated": "Изменено знание",
+    "audit.action_calls_cancelled": "Звонок отменён",
+    "audit.action_calls_requested": "Запрошен звонок",
+    "audit.action_channels_channel_created": "Создан канал",
+    "audit.action_channels_channel_deleted": "Удалён канал",
+    "audit.action_channels_channel_updated": "Изменён канал",
+    "audit.action_channels_connection_bound": "Подключение привязано к агенту",
+    "audit.action_contacts_merged": "Объединение контактов",
+    "audit.action_contacts_unmerged": "Разъединение контактов",
+    "audit.action_conversation_contact_updated": "Изменён контакт диалога",
+    "audit.action_conversations_archived": "Диалог отправлен в архив",
+    "audit.action_conversations_assignee_changed": "Изменён ответственный за диалог",
+    "audit.action_conversations_claimed": "Диалог взят в работу",
+    "audit.action_conversations_closed": "Диалог закрыт",
+    "audit.action_conversations_contact_requested": "Запрошены контакты клиента",
+    "audit.action_conversations_contact_updated": "Изменён контакт диалога",
+    "audit.action_conversations_file_sent": "Отправлен файл в диалог",
+    "audit.action_conversations_group_changed": "Изменена группа диалога",
+    "audit.action_conversations_marked_spam": "Диалог помечен спамом",
+    "audit.action_conversations_priority_changed": "Изменён приоритет диалога",
+    "audit.action_conversations_released_to_ai": "Диалог возвращён AI",
+    "audit.action_conversations_returned_to_queue": "Диалог возвращён в очередь",
+    "audit.action_conversations_unarchived": "Диалог возвращён из архива",
+    "audit.action_conversations_voice_sent": "Отправлено голосовое в диалог",
+    "audit.action_demo_install_requested": "Запрошена установка демо-данных",
+    "audit.action_demo_installed": "Демо-данные установлены",
+    "audit.action_demo_installed_accounts": "Созданы учётные записи демо-сотрудников",
+    "audit.action_demo_remove_requested": "Запрошено удаление демо-данных",
+    "audit.action_demo_removed": "Демо-данные удалены",
+    "audit.action_identity_access_assignment_created": "Назначен доступ сотруднику",
+    "audit.action_identity_access_assignment_revoked": "Отозван доступ сотрудника",
+    "audit.action_identity_access_profile_created": "Создан профиль доступа",
+    "audit.action_identity_access_profile_updated": "Изменён профиль доступа",
+    "audit.action_identity_avatar_deleted": "Удалено фото профиля",
+    "audit.action_identity_avatar_updated": "Изменено фото профиля",
+    "audit.action_identity_employee_blocked": "Сотрудник заблокирован",
+    "audit.action_identity_employee_created": "Добавлен сотрудник",
+    "audit.action_identity_employee_groups_changed": "Изменены группы сотрудника",
+    "audit.action_identity_employee_password_reset": "Сброшен пароль сотрудника",
+    "audit.action_identity_employee_privileged_action_denied": "Отказано в привилегированном действии",
+    "audit.action_identity_employee_role_changed": "Изменена роль сотрудника",
+    "audit.action_identity_employee_sessions_terminated": "Завершены сессии сотрудника",
+    "audit.action_identity_employee_unblocked": "Сотрудник разблокирован",
+    "audit.action_identity_employee_updated": "Изменён сотрудник",
+    "audit.action_identity_group_created": "Создана группа",
+    "audit.action_identity_group_deleted": "Удалена группа",
+    "audit.action_identity_group_updated": "Изменена группа",
+    "audit.action_identity_instance_setup_completed": "Пройден мастер первого запуска",
+    "audit.action_identity_login_failed": "Неудачный вход",
+    "audit.action_identity_login_succeeded": "Вход в систему",
+    "audit.action_identity_login_totp_required": "Запрошен код двухфакторной проверки",
+    "audit.action_identity_logout": "Выход из системы",
+    "audit.action_identity_owner_bootstrapped": "Создан владелец установки",
+    "audit.action_identity_ownership_transferred": "Передано владение организацией",
+    "audit.action_identity_password_reset_completed": "Пароль восстановлен",
+    "audit.action_identity_password_reset_failed": "Неудачный сброс пароля",
+    "audit.action_identity_password_reset_requested": "Запрошен сброс пароля",
+    "audit.action_identity_profile_language_changed": "Изменён язык интерфейса",
+    "audit.action_identity_profile_password_changed": "Изменён пароль",
+    "audit.action_identity_profile_sessions_revoked": "Завершены свои сессии",
+    "audit.action_identity_profile_totp_disabled": "Отключена двухфакторная проверка",
+    "audit.action_identity_profile_totp_setup_started": "Начата настройка двухфакторной проверки",
+    "audit.action_identity_profile_updated": "Изменён профиль сотрудника",
+    "audit.action_identity_temporary_password_changed": "Сменён временный пароль",
+    "audit.action_identity_totp_enabled": "Включена двухфакторная проверка",
+    "audit.action_identity_totp_setup_failed": "Ошибка настройки двухфакторной проверки",
+    "audit.action_identity_totp_verify_failed": "Неверный код двухфакторной проверки",
+    "audit.action_integrations_integration_created": "Добавлена интеграция",
+    "audit.action_integrations_integration_deleted": "Удалена интеграция",
+    "audit.action_integrations_integration_updated": "Изменена интеграция",
+    "audit.action_organization_owner_activated": "Активирован владелец организации",
+    "audit.action_organization_owner_invitation_requested": "Отправлено приглашение владельцу",
+    "audit.action_organization_provisioned": "Создана организация",
+    "audit.action_support_portal_articles_imported": "Импортированы статьи портала",
+    "audit.action_support_portal_created": "Создан портал",
+    "audit.action_support_portal_draft": "Портал снят с публикации",
+    "audit.action_support_portal_published": "Портал опубликован",
+    "audit.category_access_assignment": "Доступ и сотрудники",
+    "audit.category_administration": "Настройки",
+    "audit.category_ai": "AI и знания",
+    "audit.category_calls": "Звонки",
+    "audit.category_channels": "Каналы",
+    "audit.category_contacts": "Контакты",
+    "audit.category_conversation": "Диалоги",
+    "audit.category_conversations": "Диалоги",
+    "audit.category_demo": "Демо-данные",
+    "audit.category_identity": "Доступ и сотрудники",
+    "audit.category_integrations": "Интеграции",
+    "audit.category_organization": "Организация",
+    "audit.category_support_portal": "Порталы",
+    "audit.object_accessassignment": "Назначение доступа",
+    "audit.object_accessprofile": "Профиль доступа",
+    "audit.object_agentcard": "Агент",
+    "audit.object_channel": "Канал",
+    "audit.object_contact": "Контакт",
+    "audit.object_conversation": "Диалог",
+    "audit.object_employeegroup": "Группа",
+    "audit.object_humanuser": "Сотрудник",
+    "audit.object_instancesettings": "Установка",
+    "audit.object_integration": "Интеграция",
+    "audit.object_knowledge": "Знание",
+    "audit.object_knowledgecategory": "Категория знаний",
+    "audit.object_organization": "Организация",
+    "audit.object_storagesettings": "Хранилище",
+    "audit.object_supportportal": "Портал",
+    "audit.result_denied": "Отклонено",
+    "audit.result_failed": "Ошибка",
+    "audit.result_success": "Выполнено",
+    "audit.category_other": "Прочее",
+    "audit.result_unknown": "Неизвестно",
+    "ai.agent_code_collision": "Не удалось подобрать уникальный код агента",
+    "ai.pick_provider_first": "Для запуска AI выберите провайдера организации",
+    "calls.already_ended": "Звонок уже завершён",
+    "calls.cannot_cancel": "Звонок уже нельзя отменить",
+    "calls.conversation_outside_groups": "Диалог вне групп сотрудника",
+    "calls.conversation_taken": "Диалог уже ведёт другой оператор",
+    "calls.identity_missing_or_ambiguous": "Клиентская identity звонка отсутствует или неоднозначна",
+    "calls.invite_cannot_accept": "Приглашение уже нельзя принять",
+    "calls.invite_cannot_decline": "Приглашение уже нельзя отклонить",
+    "calls.no_access": "Нет доступа к звонкам",
+    "calls.no_client_identity": "У диалога нет клиентской identity для звонка",
+    "calls.not_a_participant": "Сотрудник не является участником звонка",
+    "calls.only_in_open_conversation": "Звонок можно запросить только в открытом диалоге",
+    "calls.operator_busy": "Сотрудник уже участвует в другом звонке",
+    "calls.operator_context_required": "Для звонка требуется контекст сотрудника",
+    "calls.second_call_rejected": "Не удалось создать второй незавершённый звонок",
+    "calls.transition_forbidden": "Переход {current} -> {target} запрещён",
+    "calls.unfinished_call_exists": "В диалоге уже есть незавершённый звонок",
+    "channels.no_active_agent": "У канала нет активного AI-агента",
+    "conversations.unavailable": "Диалог недоступен",
+    "admin.action_not_allowed_for_employee": "Это действие над этим сотрудником недоступно",
+    "admin.email_required": "Укажите email",
+    "admin.email_taken": "Этот email уже используется",
+    "admin.full_name_required": "Укажите имя и фамилию",
+    "admin.invalid_role": "Неизвестная роль",
+    "admin.not_allowed": "Недостаточно прав",
+    "admin.previous_owner_role": "Прежний владелец становится администратором или сотрудником",
+    "admin.target_must_be_active": "Владение передаётся действующему сотруднику",
+    "admin.temporary_passwords_unsupported": "Временные пароли не поддерживаются",
+    "admin.unknown_password_mode": "Неизвестный режим выдачи пароля",
+    "ai.attachment_not_found": "Вложение не найдено",
+    "ai.category_not_found": "Категория не найдена",
+    "ai.documents_non_empty": "documents — непустой список",
+    "ai.file_required": "Нужен файл в поле file (multipart/form-data)",
+    "ai.group_id_integer_or_null": "groupId — целое число или null",
+    "ai.group_id_or_none": "group — идентификатор или none",
+    "ai.history_must_be_list": "history — список",
+    "ai.integration_id_integer": "integrationId — целое число",
+    "ai.knowledge_not_found": "Знание не найдено",
+    "ai.title_required": "Укажите заголовок",
+    "conversations.archived_boolean": "archived — булево значение",
+    "conversations.label_ids_list": "labelIds — список идентификаторов",
+    "identity.invalid_credentials": "Неверный email или пароль",
+    "identity.invalid_totp_code": "Неверный код",
+    "identity.invitation_email_mismatch": "Приглашение выписано на другой адрес",
+    "identity.invitation_invalid": "Приглашение недействительно или истекло",
+    "identity.role_conflict": "У пользователя уже другая роль в этой организации",
+    "identity.token_required": "Нужен токен",
+    "identity.totp_challenge_inactive": "Проверка кода уже неактуальна — войдите заново",
+    "notifications.ids_list_or_all": "ids — список, либо all=true",
+    "notifications.push_types_list": "pushTypes — список",
+    "platform.idempotency_key_required": "Нужен заголовок Idempotency-Key",
+    "portals.articles_non_empty": "articles — непустой список",
+    "profile.current_password_invalid": "Текущий пароль неверен",
+    "profile.totp_enabled_already": "Двухфакторная аутентификация уже включена",
+    "profile.totp_required_by_policy": "Организация требует двухфакторную аутентификацию",
+    "ai.provider_error": "Ошибка провайдера: {error}",
+    "conversations.activity_closed": "Диалог закрыт · {channel}",
+    "conversations.activity_started": "Диалог · {channel}",
+    "conversations.field_too_long": "Поле {field}: не длиннее {limit} символов",
+    "ai.provider_no_transcription": "Провайдер {provider} не поддерживает расшифровку аудио",
+    "ai.transcription_failed": "Расшифровка не удалась: {error}",
+    "ai.transcription_failed_http": "Расшифровка не удалась: HTTP {code} {detail}",
+    "api.expected_integer": "{name}: ожидается целое число",
+    "api.expected_positive": "{name}: ожидается число больше нуля",
+    "api.expected_record_id": "{name}: ожидается идентификатор записи",
+    "settings.storage_unavailable": "Хранилище недоступно: {error}",
+    "admin.actor_system": "Система",
+    "admin.image_formats": "Поддерживаются PNG, JPEG и WebP",
+    "admin.logo_too_large": "Размер логотипа не должен превышать 2 МБ",
+    "calls.calls_off_entry_point": "Звонки отключены для этой точки входа",
+    "calls.failure_code_required": "Для FAILED требуется нормализованный failure_code",
+    "calls.video_off_entry_point": "Видеозвонки отключены для этой точки входа",
+    "channels.archived_channel_binding": "Нельзя привязать подключение к архивному каналу",
+    "channels.connection_not_bound": "Подключение не привязано к каналу",
+    "channels.connection_not_found": "Подключение не найдено",
+    "channels.llm_is_not_a_connection": "LLM-провайдер не является подключением канала",
+    "channels.name_required": "Название канала не может быть пустым",
+    "channels.name_too_long": "Название канала длиннее 255 символов",
+    "portals.a_record_mismatch": "A-запись домена указывает не на сервер Chatballs",
+    "portals.a_record_missing": "A-запись домена пока не найдена",
+    "portals.anonymous_widget_missing": "Активный анонимный Web-виджет поддержки не найден",
+    "portals.archived_article_publish": "Архивную статью нельзя публиковать",
+    "portals.archived_article_readonly": "Архивную статью нельзя изменять",
+    "portals.domain_empty_check": "Нельзя подтвердить пустой домен",
+    "portals.domain_is_internal": "Домен внутреннего приложения использовать нельзя",
+    "portals.domain_required_first": "Сначала укажите домен",
+    "portals.domain_same_as_installation": "Свой домен должен отличаться от адреса Chatballs",
+    "portals.domain_taken": "Этот домен уже используется другим порталом",
+    "portals.file_name_required": "Имя файла обязательно",
+    "portals.file_too_large": "Файл больше 25 МБ",
+    "portals.invalid_theme_id": "Некорректный идентификатор темы",
+    "portals.invalid_theme_scheme": "Неизвестная цветовая схема темы",
+    "portals.invalid_theme_setting_name": "Некорректное имя параметра темы",
+    "portals.move_articles_first": "Сначала переместите статьи из этого раздела",
+    "portals.move_nested_sections_first": "Сначала переместите или удалите вложенные разделы",
+    "portals.other_organization": "Портал принадлежит другой организации",
+    "portals.restore_to_edit_content": "Восстановите портал, чтобы изменить его содержимое",
+    "portals.restore_to_edit_domain": "Восстановите портал, чтобы изменить его домен",
+    "portals.restore_to_edit_settings": "Восстановите портал, чтобы изменить настройки",
+    "portals.restore_to_verify_domain": "Восстановите портал, чтобы подтвердить его домен",
+    "portals.revision_not_found": "Версия статьи не найдена",
+    "portals.slug_taken": "Этот адрес уже используется другим порталом",
+    "portals.theme_settings_json": "Параметры темы должны быть JSON-объектом",
+    "portals.theme_settings_object": "Параметры темы должны быть объектом",
+    "portals.theme_settings_too_large": "Параметры темы слишком велики",
+    "portals.unknown_status": "Неизвестный статус портала",
+    "portals.widget_channel_missing": "Канал веб-виджета не найден",
+    "profile.photo_too_large": "Размер фото не должен превышать 2 МБ",
+    "settings.local_or_s3": "LOCAL или S3",
+    "settings.object_written_not_readable": "Объект записан, но не читается — проверьте права на чтение",
+    "settings.seconds_number": "Число секунд",
+    "admin.group_name_required": "Укажите название группы",
+    "ai.agent_other_organization": "Агент принадлежит другой организации",
+    "ai.archived_agent_state": "Состояние архивного агента не меняется",
+    "ai.at_least_one_knowledge_id": "Нужен хотя бы один идентификатор знания",
+    "ai.attachment_other_organization": "Вложение принадлежит другой организации",
+    "ai.category_cycle": "Категорию нельзя перенести внутрь себя",
+    "ai.category_name_required": "Укажите название категории",
+    "ai.category_names_strings": "Названия категорий — непустые строки",
+    "ai.category_other_organization": "Категория принадлежит другой организации",
+    "ai.category_path_not_found": "Путь категории не найден",
+    "ai.category_path_required": "«categoryPath» — непустой список",
+    "ai.category_with_children": "Сначала перенесите вложенные категории",
+    "ai.category_with_knowledge": "Сначала перенесите знания из категории",
+    "ai.channel_required": "Укажите канал",
+    "ai.content_required": "Поле «content» обязательно",
+    "ai.description_string": "Поле «description» — строка",
+    "ai.document_object_required": "Документ должен быть объектом",
+    "ai.expected_attach_or_detach": "Ожидается attach или detach",
+    "ai.file_name_required": "Имя файла обязательно",
+    "ai.file_too_large_25": "Файл больше 25 МБ",
+    "ai.integration_model_required": "У интеграции не задана модель по умолчанию",
+    "ai.knowledge_ids_integers": "Идентификаторы знаний — целые числа",
+    "ai.knowledge_other_organization": "Знание принадлежит другой организации",
+    "ai.knowledge_unknown_or_unavailable": "Знание неизвестно или недоступно",
+    "ai.list_of_ids": "Нужен список идентификаторов",
+    "ai.list_of_knowledge_ids": "Нужен список идентификаторов знаний",
+    "ai.parent_category_not_found": "Родительская категория не найдена",
+    "ai.parent_category_other_organization": "Родительская категория принадлежит другой организации",
+    "ai.system_category_immutable": "Системная категория не изменяется",
+    "ai.system_category_name_immutable": "Название системной категории не меняется",
+    "ai.system_category_undeletable": "Системную категорию нельзя удалить",
+    "ai.unknown_knowledge_item": "Неизвестное знание",
+    "ai.unknown_portal_article": "Неизвестная статья портала",
+    "ai.unknown_provider_integration": "Неизвестная интеграция OpenRouter или Custom",
+    "api.at_least_one_id": "Нужен хотя бы один идентификатор",
+    "api.boolean_required": "Нужно булево значение",
+    "api.integer_id_required": "Нужен целочисленный идентификатор",
+    "api.integer_required": "Нужно целое число",
+    "api.list_of_ids_required": "Нужен список идентификаторов",
+    "api.object_required": "Нужен объект",
+    "api.positive_id_required": "Нужен положительный целочисленный идентификатор",
+    "channels.agent_exists": "У канала уже есть AI-агент",
+    "channels.not_found": "Канал не найден",
+    "channels.unknown_group": "Неизвестная группа",
+    "conversations.file_download_unsupported": "Этот канал не поддерживает скачивание файлов",
+    "conversations.telegram_getfile_failed": "Telegram не отдал файл",
+    "conversations.voice_download_unsupported": "Этот канал не поддерживает скачивание голосовых",
+    "portals.article_object_required": "Статья должна быть объектом",
+    "portals.locale_string": "Поле «locale» — строка",
+    "portals.summary_string": "Поле «summary» — строка",
+    "portals.widget_channel_mismatch": "Виджет и канал не совпадают",
+    "portals.widget_needs_anonymous": "Виджет портала должен допускать анонимные сессии",
+    "portals.widget_needs_channel": "Виджет портала должен быть привязан к каналу",
+    "settings.allowed_origins_list": "allowedOrigins — список строк",
+    "settings.api_key_required": "Укажите API-ключ",
+    "settings.custom_base_url_required": "Укажите Base URL",
+    "settings.custom_model_required": "Укажите модель",
+    "settings.email_hosts_required": "Укажите адрес, IMAP- и SMTP-сервер",
+    "settings.email_not_a_bot": "Почта не может быть ботом уведомлений",
+    "settings.inactive_channel": "Неактивный канал не принимает подключения",
+    "settings.integration_other_organization": "Интеграция принадлежит другой организации",
+    "settings.mailbox_password_required": "Укажите пароль ящика",
+    "settings.name_required": "Укажите название",
+    "settings.ports_numbers": "Порты — числа",
+    "settings.quick_replies_list": "quickReplies — список строк",
+    "settings.unknown_provider": "Неизвестный провайдер",
+    "ai.field_required": "Поле «{field}» обязательно",
+    "ai.unexpected_provider_response": "Неожиданный ответ провайдера: {error}",
+    "settings.base_url_rejected": "Base URL: {error}",
+    "settings.proxy_url_rejected": "Прокси: {error}",
+    "notifications.type_dialog_waiting": "Диалог ждёт оператора",
+    "notifications.type_dialog_new_message": "Новое сообщение в диалоге",
+    "notifications.type_release_published": "Опубликован релиз агента",
+    "notifications.type_integration_error": "Ошибка интеграции",
+    "integrations.check_no_connection": "Нет связи: {error}",
+    "integrations.check_api_key_missing": "Не указан API-ключ",
+    "integrations.check_base_url_missing": "Не указан Base URL",
+    "integrations.check_bot_token_missing": "Не указан токен бота",
+    "integrations.check_mailbox_password_missing": "Не указан пароль ящика",
+    "integrations.check_mail_hosts_missing": "Не заполнены адрес, IMAP- или SMTP-хост",
+    "integrations.check_provider_answered": "{provider} ответил {status}",
+    "integrations.check_endpoint_answered": "Эндпоинт ответил {status}",
+    "integrations.check_key_accepted": "ключ принят",
+    "integrations.check_bot_connected": "бот подключён",
+    "integrations.check_demo": "Демо-провайдер: отвечает по знаниям агента, без внешних запросов и ключей",
+    "integrations.check_unsupported": "Проверка для этого типа подключения не поддерживается",
+    "integrations.check_web_not_bound": "Подключение не привязано к каналу — виджет не активен",
+    "integrations.check_web_no_config": "Конфигурация Web-виджета не создана",
+    "integrations.check_web_no_origins": "Не заданы разрешённые домены — виджет будет недоступен на сайте",
+    "integrations.check_web_active": "Web-виджет активен · канал «{channel}»",
+    "integrations.check_endpoint_models": {"one": "Эндпоинт отвечает: {count} модель", "few": "Эндпоинт отвечает: {count} модели", "many": "Эндпоинт отвечает: {count} моделей", "other": "Эндпоинт отвечает: {count} модели"},
+    "identity.password_help": "Пароль должен содержать букву, цифру и спецсимвол.",
+    "conversations.attachment_too_large": "Файл больше 20 МБ",
+    "conversations.attachment_empty": "Пустой файл",
+    "conversations.attachment_type_blocked": "Такой тип файла отправить нельзя",
+    "settings.s3_bucket_required": "Укажите имя бакета",
+    "settings.s3_endpoint_scheme": "Адрес должен начинаться с http:// или https://",
+    "settings.s3_access_key_required": "Укажите Access Key",
+    "settings.s3_secret_key_required": "Укажите Secret Key",
+    "channels.binding_conflict": "Подключение уже привязано к другому каналу: перенос требует force",
+    "channels.operation_needs_manage": "{operation} требует channels.manage",
+    "channels.operation_status_change": "Изменение статуса канала",
+    "channels.operation_policy_change": "Изменение политики канала",
+    "conversations.dialog_status_closed": "Закрыт",
+    "conversations.dialog_status_operator": "Оператор",
+    "conversations.dialog_status_wait": "Ждёт оператора",
+    "setup.your_name_required": "Укажите ваше имя",
+    "setup.your_name_too_long": "Имя длиннее 255 символов",
+    "setup.email_invalid": "Укажите корректный e-mail",
+    "setup.check_fields": "Проверьте заполненные поля",
+    "setup.owner_position": "Владелец",
+    "ai.agent_without_llm_integration": "Агент не привязан к LLM-интеграции BYOK; выберите провайдера в настройках агента",
+    "ai.integration_is_not_llm": "Интеграция «{provider}» не является LLM-провайдером BYOK",
+    "settings.url_scheme_required": "Адрес должен начинаться с одной из схем: {schemes}",
+    "settings.download_http_only": "Скачивать можно только по http/https",
+    "settings.url_points_inside": "Адрес ведёт во внутреннюю сеть",
+    "settings.scheme_forbidden": "Схема {scheme} в исходящих запросах запрещена",
+    "conversations.contact_request": "Поделитесь, пожалуйста, контактом — нажмите кнопку ниже.",
+    "conversations.contact_request_web": "Поделитесь, пожалуйста, номером телефона.",
+    "calls.invite_text": "Приглашаем вас на {kind}. Нажмите кнопку, чтобы перейти к звонку.",
+    "conversations.email_default_subject": "Ваше обращение",
+    "conversations.voice_message": "Голосовое сообщение",
+    "conversations.file_caption": "Файл: {name}",
+    "webchat.default_greeting": "Здравствуйте! Готов помочь и ответить на вопросы. Чем можем помочь?",
+    "webchat.default_consent": "Продолжая, вы соглашаетесь на обработку сообщений для ответа на обращение.",
+    "webchat.guest_name": "Гость · {code}",
+    "channels.operation_agent_create": "Создание агента",
+    "channels.operation_agent_delete": "Удаление агента",
+    "identity.browser_unknown": "Браузер",
+    "settings.mail_test_subject": "Проверка почты Chatballs",
+    "settings.mail_test_body": "Это тестовое письмо из «Настроек». Если вы его читаете, почта установки работает.",
+    "notifications.binding_done": "Готово! Уведомления Chatballs подключены. Отключить можно в профиле.",
+    "notifications.binding_hint": "Это сервисный бот уведомлений Chatballs. Чтобы подключить уведомления, откройте профиль в Chatballs и нажмите «Подключить».",
+    "conversations.button_share_contact": "Поделиться контактом",
+    "conversations.button_join_call": "Перейти к звонку",
+    "ai.demo_handover": "Уточню этот вопрос у коллег и передам диалог сотруднику — он ответит в рабочее время.",
+    "ai.demo_handover_suffix": " Передаю диалог сотруднику — он поможет дальше.",
+    "ai.unknown_answer_language": "Неизвестный язык ответов агента",
+}
@@ -0,0 +1,62 @@
+"""Активация языка на время одного запроса.
+
+Стоит последней в цепочке — ближе всех к вьюхе, — потому что организацию
+запроса определяет ``TenantContextMiddleware``, и до неё язык организации ещё
+неизвестен. Активируется штатный механизм Django: от него зависят и наш
+каталог, и сообщения DRF о невалидных полях.
+"""
+
+from __future__ import annotations
+
+from collections.abc import Callable
+
+from django.http import HttpRequest, HttpResponse
+from django.utils import translation
+
+from chatballs.i18n.languages import INHERIT, first_chosen, resolve_language
+
+
+class LanguageMiddleware:
+    def __init__(self, get_response: Callable[[HttpRequest], HttpResponse]) -> None:
+        self.get_response = get_response
+
+    def __call__(self, request: HttpRequest) -> HttpResponse:
+        # Язык установки спрашивается последним и только если до него дошло:
+        # это чтение из базы, и запросу сотрудника со своим языком (или из
+        # организации со своим) оно не нужно вовсе.
+        language = first_chosen(
+            self._user_language(request), self._organization_language(request)
+        ) or resolve_language(
+            instance_language=self._instance_language(),
+            accept_language=request.headers.get("Accept-Language"),
+        )
+        with translation.override(language):
+            request.LANGUAGE_CODE = language
+            response = self.get_response(request)
+        # Заголовок нужен кэшам и прокси: один и тот же URL отдаёт разный текст
+        # для разных людей, и без Vary ответ одного уедет другому.
+        response.setdefault("Content-Language", language)
+        existing = response.get("Vary", "")
+        if "accept-language" not in existing.lower():
+            response["Vary"] = f"{existing}, Accept-Language".lstrip(", ")
+        return response
+
+    @staticmethod
+    def _user_language(request: HttpRequest) -> str:
+        user = getattr(request, "user", None)
+        if user is None or not user.is_authenticated:
+            return INHERIT
+        return getattr(user, "ui_language", INHERIT) or INHERIT
+
+    @staticmethod
+    def _organization_language(request: HttpRequest) -> str:
+        context = getattr(request, "tenant_context", None)
+        if context is None:
+            return INHERIT
+        return getattr(context.organization, "language", INHERIT) or INHERIT
+
+    @staticmethod
+    def _instance_language() -> str:
+        from chatballs.identity.instance_settings import default_language
+
+        return default_language()
@@ -0,0 +1,161 @@
+"""Проверки языка интерфейса.
+
+Главная из них — совпадение наборов ключей в каталогах. Пропущенный перевод не
+роняет запрос (строка выходит по-русски), и именно поэтому его легко не
+заметить: без теста английский каталог отстаёт молча.
+"""
+
+from __future__ import annotations
+
+import pathlib
+import re
+
+from django.test import SimpleTestCase, TestCase, override_settings
+
+from chatballs.i18n import normalize_language, parse_accept_language, resolve_language, t
+from chatballs.i18n.catalog import _plural_category
+from chatballs.i18n.languages import DEFAULT_LANGUAGE, LANGUAGE_CODES
+from chatballs.i18n.messages import CATALOG
+
+
+class CatalogTests(SimpleTestCase):
+    def test_every_language_has_the_same_keys(self) -> None:
+        russian = set(CATALOG["ru"])
+        for code, table in CATALOG.items():
+            if code == DEFAULT_LANGUAGE:
+                continue
+            self.assertEqual(
+                russian - set(table), set(), f"нет перевода на {code}"
+            )
+            self.assertEqual(
+                set(table) - russian, set(), f"лишние ключи в {code}"
+            )
+
+    def test_placeholders_match_between_languages(self) -> None:
+        """Параметры фразы обязаны совпадать: иначе подстановка молча потеряется."""
+
+        placeholders = re.compile(r"\{(\w+)\}")
+
+        def names(message: object) -> set[str]:
+            if isinstance(message, dict):
+                return {n for form in message.values() for n in placeholders.findall(form)}
+            return set(placeholders.findall(str(message)))
+
+        for key, russian in CATALOG["ru"].items():
+            for code, table in CATALOG.items():
+                if code == DEFAULT_LANGUAGE:
+                    continue
+                self.assertEqual(
+                    names(russian), names(table[key]), f"{key}: расходятся параметры в {code}"
+                )
+
+    def test_every_key_used_in_code_exists(self) -> None:
+        """Вызов t() без ключа в каталоге молча печатает сам ключ.
+
+        Так уже случалось: строки заменили на вызовы, а ключи в каталог
+        дописать забыли — и вместо текста в ответе поехало «channels.
+        connection_not_found». Ошибка не падает и в логах не видна, поэтому
+        ищется здесь, обходом исходников.
+        """
+
+        import ast
+
+        root = pathlib.Path(__file__).resolve().parents[1]
+        known = set(CATALOG[DEFAULT_LANGUAGE])
+        unknown: list[str] = []
+        for source in root.rglob("*.py"):
+            # Каталог — это сами словари; тесты намеренно зовут несуществующий
+            # ключ, проверяя фолбэк.
+            if "__pycache__" in source.parts or source.parts[-2:-1] == ("messages",):
+                continue
+            if "test" in source.name:
+                continue
+            for node in ast.walk(ast.parse(source.read_text(encoding="utf-8"))):
+                if not isinstance(node, ast.Call):
+                    continue
+                if getattr(node.func, "id", "") not in ("t", "tn") or not node.args:
+                    continue
+                first = node.args[0]
+                # Ключ, собранный из выражения, проверить статически нельзя —
+                # такие места отвечают за себя сами (см. _system_text).
+                if isinstance(first, ast.Constant) and isinstance(first.value, str):
+                    if first.value not in known:
+                        unknown.append(f"{source.name}:{node.lineno} {first.value}")
+        self.assertEqual(unknown, [], "ключи вызываются, но в каталоге их нет")
+
+    def test_unknown_key_returns_itself(self) -> None:
+        self.assertEqual(t("нет.такого.ключа"), "нет.такого.ключа")
+
+    def test_plural_rule_follows_the_language(self) -> None:
+        """Форма выбирается по правилам CLDR, а не по «1 — единственное».
+
+        Строк с числом в каталоге бэкенда сейчас нет, и проверять нечего, кроме
+        самого правила: русскому нужны четыре формы, английскому — две, и
+        ошибка здесь всплыла бы на первой же фразе со счётчиком.
+        """
+
+        self.assertEqual([_plural_category("ru", n) for n in (1, 2, 5, 11, 21)],
+                         ["one", "few", "many", "many", "one"])
+        self.assertEqual([_plural_category("en", n) for n in (1, 2)], ["one", "other"])
+
+
+class LanguageResolutionTests(SimpleTestCase):
+    def test_normalize_accepts_region_and_case(self) -> None:
+        self.assertEqual(normalize_language("ru-RU"), "ru")
+        self.assertEqual(normalize_language("EN"), "en")
+        self.assertEqual(normalize_language("ru_ru"), "ru")
+
+    def test_unknown_language_is_not_a_choice(self) -> None:
+        # Не ошибка, а «выбора нет»: запрос сводится к языку выше по цепочке.
+        self.assertEqual(normalize_language("de"), "")
+        self.assertEqual(normalize_language(None), "")
+
+    def test_accept_language_respects_quality(self) -> None:
+        self.assertEqual(parse_accept_language("en;q=0.9, ru"), "ru")
+        self.assertEqual(parse_accept_language("en-GB,en;q=0.9"), "en")
+        self.assertEqual(parse_accept_language("de,fr;q=0.5"), "")
+
+    def test_personal_choice_beats_organization(self) -> None:
+        self.assertEqual(
+            resolve_language(user_language="en", organization_language="ru"), "en"
+        )
+
+    def test_organization_beats_installation(self) -> None:
+        self.assertEqual(
+            resolve_language(organization_language="en", instance_language="ru"), "en"
+        )
+
+    def test_browser_is_the_last_resort(self) -> None:
+        self.assertEqual(resolve_language(accept_language="en-US"), "en")
+        self.assertEqual(resolve_language(), DEFAULT_LANGUAGE)
+
+
+class FrontendListTests(SimpleTestCase):
+    """Список языков продублирован во фронтенде — он обязан совпадать.
+
+    Виджет открывается у клиента до любого запроса к API и знает свой язык сам,
+    поэтому список там свой. Расхождение означало бы язык, который интерфейс
+    предлагает, а сервер не принимает.
+    """
+
+    def test_frontend_language_list_matches(self) -> None:
+        source = (
+            pathlib.Path(__file__).resolve().parents[4]
+            / "packages/shared/src/i18n/index.ts"
+        )
+        if not source.exists():
+            # В образе бэкенда фронтенда нет: проверка имеет смысл только на
+            # полном чекауте, где и правят оба списка.
+            self.skipTest("фронтенд не смонтирован")
+        codes = re.findall(r'\{ code: "(\w+)", label:', source.read_text(encoding="utf-8"))
+        self.assertEqual(tuple(codes), LANGUAGE_CODES)
+
+
+@override_settings(ROOT_URLCONF="chatballs_backend.urls")
+class MiddlewareTests(TestCase):
+    def test_response_declares_the_language(self) -> None:
+        """Ответ помечен языком и Vary: один URL отдаёт разный текст."""
+
+        response = self.client.get("/api/v1/auth/session/", HTTP_ACCEPT_LANGUAGE="en")
+        self.assertEqual(response["Content-Language"], "en")
+        self.assertIn("Accept-Language", response["Vary"])
@@ -4,12 +4,14 @@ from zoneinfo import available_timezones

 from django.urls import reverse

+from chatballs.i18n import t
+from chatballs.i18n.languages import LANGUAGES
 from chatballs.identity.audit_catalog import (
-    AUDIT_RESULT_LABELS,
    audit_action_label,
    audit_category,
    audit_category_label,
    audit_object_label,
+    audit_result_label,
 )
 from chatballs.identity.models import AuditEvent, Organization

@@ -42,6 +44,9 @@ def organization_settings_payload(organization: Organization) -> dict[str, objec
        "name": organization.name,
        "timezone": organization.timezone,
        "currency": organization.currency,
+        # Пустая строка доезжает до интерфейса как есть: там это отдельный
+        # пункт «Как в установке», а не отсутствие значения.
+        "language": organization.language,
        "updatedAt": organization_updated_at(organization),
        "logoUrl": (
            reverse(
@@ -58,6 +63,17 @@ def administration_timezones() -> list[str]:
    return sorted(available_timezones())


+def administration_languages() -> list[dict[str, str]]:
+    """Языки для выпадающего списка в «Организации».
+
+    Подпись — на самом языке («Русский», «English»), а не переведённая:
+    человек ищет в списке свой язык, и «Русский» он узнает, даже когда
+    интерфейс сейчас английский.
+    """
+
+    return [{"code": code, "label": label} for code, label in LANGUAGES]
+
+
 def audit_event_payload(event: AuditEvent) -> dict[str, object]:
    """Событие журнала. Отдаём и код действия, и подпись: подписи может не быть
    (тогда интерфейс показывает код), а код нужен для поиска в любом случае."""
@@ -68,7 +84,7 @@ def audit_event_payload(event: AuditEvent) -> dict[str, object]:
        "id": event.id,
        "createdAt": event.created_at.isoformat(),
        "actorId": actor.id if actor is not None else None,
-        "actor": ((actor.full_name or actor.email) if actor is not None else "Система"),
+        "actor": ((actor.full_name or actor.email) if actor is not None else t("admin.actor_system")),
        "actorEmail": (actor.email if actor is not None else ""),
        "action": event.action,
        "actionLabel": audit_action_label(event.action),
@@ -78,7 +94,7 @@ def audit_event_payload(event: AuditEvent) -> dict[str, object]:
        "objectType": event.object_type,
        "objectId": event.object_id,
        "result": event.result,
-        "resultLabel": AUDIT_RESULT_LABELS.get(event.result, "Неизвестно"),
+        "resultLabel": audit_result_label(event.result),
        "sourceIp": event.source_ip or "",
        "correlationId": event.correlation_id,
        "details": event.payload or {},
@@ -9,6 +9,8 @@ from django.core.files.base import ContentFile
 from django.core.files.uploadedfile import UploadedFile
 from django.db import transaction

+from chatballs.i18n import t
+from chatballs.i18n.languages import normalize_language
 from chatballs.identity.models import Organization
 from chatballs.tenancy.context import TenantContext
 from chatballs.tenancy.storage import adjust_storage_usage
@@ -26,27 +28,36 @@ class OrganizationSettingsInput:
    name: str
    timezone: str
    currency: str
+    # Пустая строка — «как в установке»: организация не обязана выбирать язык,
+    # и владелец, который его не трогал, не должен получить жёсткий русский
+    # после того, как язык установки сменили.
+    language: str = ""


 def _validate_input(data: OrganizationSettingsInput) -> OrganizationSettingsInput:
    name = data.name.strip()
    timezone = data.timezone.strip()
    currency = data.currency.strip().upper()
+    language = normalize_language(data.language)
+    if data.language.strip() and not language:
+        raise ValidationError({"language": t("settings.language_unsupported")})
    if not name:
-        raise ValidationError({"name": "Укажите название организации"})
+        raise ValidationError({"name": t("admin.organization_name_required")})
    if len(name) > 255:
-        raise ValidationError({"name": "Название не должно превышать 255 символов"})
+        raise ValidationError({"name": t("admin.name_too_long")})
    try:
        ZoneInfo(timezone)
    except (ValueError, ZoneInfoNotFoundError) as error:
        raise ValidationError(
-            {"timezone": "Укажите корректный часовой пояс"}
+            {"timezone": t("admin.invalid_timezone")}
        ) from error
    if currency != "RUB":
        raise ValidationError(
-            {"currency": "Поддерживается только российский рубль (RUB)"}
+            {"currency": t("admin.currency_rub_only")}
        )
-    return OrganizationSettingsInput(name=name, timezone=timezone, currency=currency)
+    return OrganizationSettingsInput(
+        name=name, timezone=timezone, currency=currency, language=language
+    )


@transaction.atomic
@@ -62,7 +73,8 @@ def update_organization_settings(
    organization.name = clean.name
    organization.timezone = clean.timezone
    organization.currency = clean.currency
-    organization.save(update_fields=["name", "timezone", "currency"])
+    organization.language = clean.language
+    organization.save(update_fields=["name", "timezone", "currency", "language"])
    return organization


@@ -84,12 +96,12 @@ def replace_organization_logo(
 ) -> Organization:
    data = upload.read()
    if not data:
-        raise ValidationError({"file": "Выберите файл логотипа"})
+        raise ValidationError({"file": t("admin.choose_logo_file")})
    if len(data) > MAX_LOGO_BYTES:
-        raise ValidationError({"file": "Размер логотипа не должен превышать 2 МБ"})
+        raise ValidationError({"file": t("admin.logo_too_large")})
    detected = _image_type(data)
    if detected is None:
-        raise ValidationError({"file": "Поддерживаются PNG, JPEG и WebP"})
+        raise ValidationError({"file": t("admin.image_formats")})
    content_type, suffix = detected
    organization = Organization.objects.select_for_update().get(
        pk=context.organization_id
@@ -13,7 +13,9 @@ from rest_framework.response import Response
 from rest_framework.views import APIView

 from chatballs.api.permissions import HasCapability
+from chatballs.i18n import t
 from chatballs.identity.administration_payloads import (
+    administration_languages,
    administration_timezones,
    audit_event_payload,
    organization_settings_payload,
@@ -29,6 +31,7 @@ from chatballs.identity.audit_catalog import (
    AUDIT_CATEGORY_ALIASES,
    AUDIT_RESULT_LABELS,
    audit_categories,
+    audit_result_label,
 )
 from chatballs.identity.models import AuditEvent

@@ -39,7 +42,7 @@ def _validation_response(error: ValidationError) -> Response:
            key: messages[0] if isinstance(messages, list) else str(messages)
            for key, messages in error.message_dict.items()
        }
-        detail = next(iter(payload.values()), "Проверьте заполненные поля")
+        detail = next(iter(payload.values()), t("setup.check_fields"))
        return Response({"detail": detail, "errors": payload}, status=400)
    return Response({"detail": "; ".join(error.messages)}, status=400)

@@ -58,6 +61,7 @@ class OrganizationSettingsView(APIView):
                    request.tenant_context.organization
                ),
                "timezones": administration_timezones(),
+                "languages": administration_languages(),
            }
        )

@@ -71,6 +75,7 @@ class OrganizationSettingsView(APIView):
                    name=str(body.get("name", organization.name)),
                    timezone=str(body.get("timezone", organization.timezone)),
                    currency=str(body.get("currency", organization.currency)),
+                    language=str(body.get("language", organization.language)),
                ),
            )
        except ValidationError as error:
@@ -101,7 +106,7 @@ class OrganizationLogoView(APIView):
    def get(self, request: Request):
        organization = request.tenant_context.organization
        if not organization.logo:
-            return Response({"detail": "Логотип не загружен"}, status=404)
+            return Response({"detail": t("admin.logo_not_uploaded")}, status=404)
        return FileResponse(
            organization.logo.open("rb"),
            content_type=organization.logo_content_type or "application/octet-stream",
@@ -111,7 +116,7 @@ class OrganizationLogoView(APIView):
    def post(self, request: Request) -> Response:
        upload = request.FILES.get("file")
        if upload is None:
-            return Response({"detail": "Выберите файл логотипа"}, status=400)
+            return Response({"detail": t("admin.choose_logo_file")}, status=400)
        try:
            organization = replace_organization_logo(
                context=request.tenant_context,
@@ -244,8 +249,8 @@ class AuditListView(APIView):
                "filters": {
                    "categories": audit_categories(),
                    "results": [
-                        {"value": key, "label": label}
-                        for key, label in AUDIT_RESULT_LABELS.items()
+                        {"value": key, "label": audit_result_label(key)}
+                        for key in AUDIT_RESULT_LABELS
                    ],
                    "actors": _audit_actors(base),
                },
@@ -277,7 +282,7 @@ def _audit_actors(base) -> list[dict[str, object]]:
    ]
    actors.sort(key=lambda item: str(item["label"]).lower())
    if base.filter(actor__isnull=True).exists():
-        actors.append({"value": "system", "label": "Система"})
+        actors.append({"value": "system", "label": t("admin.actor_system")})
    return actors


@@ -14,22 +14,24 @@

 from __future__ import annotations

+from chatballs.i18n import t
+
 # Разделы журнала: по ним фильтр и группировка. Ключ — префикс кода действия
 # до первой точки.
 AUDIT_CATEGORY_LABELS: dict[str, str] = {
-    "identity": "Доступ и сотрудники",
-    "access_assignment": "Доступ и сотрудники",
-    "administration": "Настройки",
-    "organization": "Организация",
-    "integrations": "Интеграции",
-    "channels": "Каналы",
-    "ai": "AI и знания",
-    "conversations": "Диалоги",
-    "conversation": "Диалоги",
-    "contacts": "Контакты",
-    "calls": "Звонки",
-    "support_portal": "Порталы",
-    "demo": "Демо-данные",
+    "identity": "audit.category_identity",
+    "access_assignment": "audit.category_access_assignment",
+    "administration": "audit.category_administration",
+    "organization": "audit.category_organization",
+    "integrations": "audit.category_integrations",
+    "channels": "audit.category_channels",
+    "ai": "audit.category_ai",
+    "conversations": "audit.category_conversations",
+    "conversation": "audit.category_conversation",
+    "contacts": "audit.category_contacts",
+    "calls": "audit.category_calls",
+    "support_portal": "audit.category_support_portal",
+    "demo": "audit.category_demo",
 }

 AUDIT_CATEGORY_ORDER = (
@@ -56,141 +58,149 @@ AUDIT_CATEGORY_ALIASES = {

 AUDIT_ACTION_LABELS: dict[str, str] = {
    # --- Доступ и сотрудники ---
-    "identity.login_succeeded": "Вход в систему",
-    "identity.login_failed": "Неудачный вход",
-    "identity.login_totp_required": "Запрошен код двухфакторной проверки",
-    "identity.logout": "Выход из системы",
-    "identity.password_reset_requested": "Запрошен сброс пароля",
-    "identity.password_reset_completed": "Пароль восстановлен",
-    "identity.password_reset_failed": "Неудачный сброс пароля",
-    "identity.temporary_password_changed": "Сменён временный пароль",
-    "identity.profile_updated": "Изменён профиль сотрудника",
-    "identity.profile_password_changed": "Изменён пароль",
-    "identity.profile_sessions_revoked": "Завершены свои сессии",
-    "identity.profile_totp_setup_started": "Начата настройка двухфакторной проверки",
-    "identity.profile_totp_disabled": "Отключена двухфакторная проверка",
-    "identity.totp_enabled": "Включена двухфакторная проверка",
-    "identity.totp_setup_failed": "Ошибка настройки двухфакторной проверки",
-    "identity.totp_verify_failed": "Неверный код двухфакторной проверки",
-    "identity.avatar_updated": "Изменено фото профиля",
-    "identity.avatar_deleted": "Удалено фото профиля",
-    "identity.employee_created": "Добавлен сотрудник",
-    "identity.employee_updated": "Изменён сотрудник",
-    "identity.employee_blocked": "Сотрудник заблокирован",
-    "identity.employee_unblocked": "Сотрудник разблокирован",
-    "identity.employee_role_changed": "Изменена роль сотрудника",
-    "identity.employee_groups_changed": "Изменены группы сотрудника",
-    "identity.employee_password_reset": "Сброшен пароль сотрудника",
-    "identity.employee_sessions_terminated": "Завершены сессии сотрудника",
-    "identity.employee_privileged_action_denied": "Отказано в привилегированном действии",
-    "identity.group_created": "Создана группа",
-    "identity.group_updated": "Изменена группа",
-    "identity.group_deleted": "Удалена группа",
-    "identity.ownership_transferred": "Передано владение организацией",
-    "identity.owner_bootstrapped": "Создан владелец установки",
-    "identity.instance_setup_completed": "Пройден мастер первого запуска",
-    "identity.access_profile_created": "Создан профиль доступа",
-    "identity.access_profile_updated": "Изменён профиль доступа",
-    "identity.access_assignment_created": "Назначен доступ сотруднику",
-    "identity.access_assignment_revoked": "Отозван доступ сотрудника",
-    "access_assignment.created": "Назначен доступ сотруднику",
+    "identity.login_succeeded": "audit.action_identity_login_succeeded",
+    "identity.login_failed": "audit.action_identity_login_failed",
+    "identity.login_totp_required": "audit.action_identity_login_totp_required",
+    "identity.logout": "audit.action_identity_logout",
+    "identity.password_reset_requested": "audit.action_identity_password_reset_requested",
+    "identity.password_reset_completed": "audit.action_identity_password_reset_completed",
+    "identity.password_reset_failed": "audit.action_identity_password_reset_failed",
+    "identity.temporary_password_changed": "audit.action_identity_temporary_password_changed",
+    "identity.profile_updated": "audit.action_identity_profile_updated",
+    "identity.profile_language_changed": "audit.action_identity_profile_language_changed",
+    "identity.profile_password_changed": "audit.action_identity_profile_password_changed",
+    "identity.profile_sessions_revoked": "audit.action_identity_profile_sessions_revoked",
+    "identity.profile_totp_setup_started": "audit.action_identity_profile_totp_setup_started",
+    "identity.profile_totp_disabled": "audit.action_identity_profile_totp_disabled",
+    "identity.totp_enabled": "audit.action_identity_totp_enabled",
+    "identity.totp_setup_failed": "audit.action_identity_totp_setup_failed",
+    "identity.totp_verify_failed": "audit.action_identity_totp_verify_failed",
+    "identity.avatar_updated": "audit.action_identity_avatar_updated",
+    "identity.avatar_deleted": "audit.action_identity_avatar_deleted",
+    "identity.employee_created": "audit.action_identity_employee_created",
+    "identity.employee_updated": "audit.action_identity_employee_updated",
+    "identity.employee_blocked": "audit.action_identity_employee_blocked",
+    "identity.employee_unblocked": "audit.action_identity_employee_unblocked",
+    "identity.employee_role_changed": "audit.action_identity_employee_role_changed",
+    "identity.employee_groups_changed": "audit.action_identity_employee_groups_changed",
+    "identity.employee_password_reset": "audit.action_identity_employee_password_reset",
+    "identity.employee_sessions_terminated": "audit.action_identity_employee_sessions_terminated",
+    "identity.employee_privileged_action_denied": "audit.action_identity_employee_privileged_action_denied",
+    "identity.group_created": "audit.action_identity_group_created",
+    "identity.group_updated": "audit.action_identity_group_updated",
+    "identity.group_deleted": "audit.action_identity_group_deleted",
+    "identity.ownership_transferred": "audit.action_identity_ownership_transferred",
+    "identity.owner_bootstrapped": "audit.action_identity_owner_bootstrapped",
+    "identity.instance_setup_completed": "audit.action_identity_instance_setup_completed",
+    "identity.access_profile_created": "audit.action_identity_access_profile_created",
+    "identity.access_profile_updated": "audit.action_identity_access_profile_updated",
+    "identity.access_assignment_created": "audit.action_identity_access_assignment_created",
+    "identity.access_assignment_revoked": "audit.action_identity_access_assignment_revoked",
+    "access_assignment.created": "audit.action_access_assignment_created",
    # --- Настройки ---
-    "administration.organization_updated": "Изменены данные организации",
-    "administration.logo_updated": "Изменён логотип организации",
-    "administration.logo_deleted": "Удалён логотип организации",
-    "administration.communication_updated": "Изменены голосовые и звонки",
-    "administration.storage_updated": "Изменено хранилище файлов",
-    "administration.storage_migration_requested": "Запущен перенос файлов",
-    "administration.instance_updated": "Изменены настройки платформы",
+    "administration.organization_updated": "audit.action_administration_organization_updated",
+    "administration.logo_updated": "audit.action_administration_logo_updated",
+    "administration.logo_deleted": "audit.action_administration_logo_deleted",
+    "administration.communication_updated": "audit.action_administration_communication_updated",
+    "administration.storage_updated": "audit.action_administration_storage_updated",
+    "administration.storage_migration_requested": "audit.action_administration_storage_migration_requested",
+    "administration.instance_updated": "audit.action_administration_instance_updated",
    # --- Организация ---
-    "organization.provisioned": "Создана организация",
-    "organization.owner_activated": "Активирован владелец организации",
-    "organization.owner_invitation_requested": "Отправлено приглашение владельцу",
+    "organization.provisioned": "audit.action_organization_provisioned",
+    "organization.owner_activated": "audit.action_organization_owner_activated",
+    "organization.owner_invitation_requested": "audit.action_organization_owner_invitation_requested",
    # --- Интеграции и каналы ---
-    "integrations.integration_created": "Добавлена интеграция",
-    "integrations.integration_updated": "Изменена интеграция",
-    "integrations.integration_deleted": "Удалена интеграция",
-    "channels.channel_created": "Создан канал",
-    "channels.channel_updated": "Изменён канал",
-    "channels.channel_deleted": "Удалён канал",
-    "channels.connection_bound": "Подключение привязано к агенту",
+    "integrations.integration_created": "audit.action_integrations_integration_created",
+    "integrations.integration_updated": "audit.action_integrations_integration_updated",
+    "integrations.integration_deleted": "audit.action_integrations_integration_deleted",
+    "channels.channel_created": "audit.action_channels_channel_created",
+    "channels.channel_updated": "audit.action_channels_channel_updated",
+    "channels.channel_deleted": "audit.action_channels_channel_deleted",
+    "channels.connection_bound": "audit.action_channels_connection_bound",
    # --- AI и знания ---
-    "ai.agent_created": "Создан агент",
-    "ai.agent_status_changed": "Изменён статус агента",
-    "ai.agent_category_knowledge_selected": "Выбраны знания категории для агента",
-    "ai.agent_knowledge_attached": "Знания подключены к агенту",
-    "ai.agent_knowledge_detached": "Знания отключены от агента",
-    "ai.agent_portal_articles_attached": "Статьи портала подключены к агенту",
-    "ai.agent_portal_articles_detached": "Статьи портала отключены от агента",
-    "ai.knowledge_created": "Добавлено знание",
-    "ai.knowledge_updated": "Изменено знание",
-    "ai.knowledge_deleted": "Удалено знание",
-    "ai.knowledge_reindexed": "Знание переиндексировано",
-    "ai.knowledge_imported": "Знания импортированы",
-    "ai.knowledge_attachment_added": "Добавлено вложение знания",
-    "ai.knowledge_attachment_deleted": "Удалено вложение знания",
-    "ai.knowledge_category_created": "Создана категория знаний",
-    "ai.knowledge_category_updated": "Изменена категория знаний",
-    "ai.knowledge_category_deleted": "Удалена категория знаний",
+    "ai.agent_created": "audit.action_ai_agent_created",
+    "ai.agent_status_changed": "audit.action_ai_agent_status_changed",
+    "ai.agent_category_knowledge_selected": "audit.action_ai_agent_category_knowledge_selected",
+    "ai.agent_knowledge_attached": "audit.action_ai_agent_knowledge_attached",
+    "ai.agent_knowledge_detached": "audit.action_ai_agent_knowledge_detached",
+    "ai.agent_portal_articles_attached": "audit.action_ai_agent_portal_articles_attached",
+    "ai.agent_portal_articles_detached": "audit.action_ai_agent_portal_articles_detached",
+    "ai.knowledge_created": "audit.action_ai_knowledge_created",
+    "ai.knowledge_updated": "audit.action_ai_knowledge_updated",
+    "ai.knowledge_deleted": "audit.action_ai_knowledge_deleted",
+    "ai.knowledge_reindexed": "audit.action_ai_knowledge_reindexed",
+    "ai.knowledge_imported": "audit.action_ai_knowledge_imported",
+    "ai.knowledge_attachment_added": "audit.action_ai_knowledge_attachment_added",
+    "ai.knowledge_attachment_deleted": "audit.action_ai_knowledge_attachment_deleted",
+    "ai.knowledge_category_created": "audit.action_ai_knowledge_category_created",
+    "ai.knowledge_category_updated": "audit.action_ai_knowledge_category_updated",
+    "ai.knowledge_category_deleted": "audit.action_ai_knowledge_category_deleted",
    # --- Диалоги ---
-    "conversations.claimed": "Диалог взят в работу",
-    "conversations.released_to_ai": "Диалог возвращён AI",
-    "conversations.returned_to_queue": "Диалог возвращён в очередь",
-    "conversations.assignee_changed": "Изменён ответственный за диалог",
-    "conversations.group_changed": "Изменена группа диалога",
-    "conversations.priority_changed": "Изменён приоритет диалога",
-    "conversations.closed": "Диалог закрыт",
-    "conversations.archived": "Диалог отправлен в архив",
-    "conversations.unarchived": "Диалог возвращён из архива",
-    "conversations.marked_spam": "Диалог помечен спамом",
-    "conversations.contact_requested": "Запрошены контакты клиента",
-    "conversations.contact_updated": "Изменён контакт диалога",
-    "conversation.contact_updated": "Изменён контакт диалога",
-    "conversations.file_sent": "Отправлен файл в диалог",
-    "conversations.voice_sent": "Отправлено голосовое в диалог",
+    "conversations.claimed": "audit.action_conversations_claimed",
+    "conversations.released_to_ai": "audit.action_conversations_released_to_ai",
+    "conversations.returned_to_queue": "audit.action_conversations_returned_to_queue",
+    "conversations.assignee_changed": "audit.action_conversations_assignee_changed",
+    "conversations.group_changed": "audit.action_conversations_group_changed",
+    "conversations.priority_changed": "audit.action_conversations_priority_changed",
+    "conversations.closed": "audit.action_conversations_closed",
+    "conversations.archived": "audit.action_conversations_archived",
+    "conversations.unarchived": "audit.action_conversations_unarchived",
+    "conversations.marked_spam": "audit.action_conversations_marked_spam",
+    "conversations.contact_requested": "audit.action_conversations_contact_requested",
+    "conversations.contact_updated": "audit.action_conversations_contact_updated",
+    "conversation.contact_updated": "audit.action_conversation_contact_updated",
+    "conversations.file_sent": "audit.action_conversations_file_sent",
+    "conversations.voice_sent": "audit.action_conversations_voice_sent",
    # --- Контакты ---
-    "contacts.merged": "Объединение контактов",
-    "contacts.unmerged": "Разъединение контактов",
+    "contacts.merged": "audit.action_contacts_merged",
+    "contacts.unmerged": "audit.action_contacts_unmerged",
    # --- Звонки ---
-    "calls.requested": "Запрошен звонок",
-    "calls.cancelled": "Звонок отменён",
+    "calls.requested": "audit.action_calls_requested",
+    "calls.cancelled": "audit.action_calls_cancelled",
    # --- Порталы ---
-    "support_portal.created": "Создан портал",
-    "support_portal.published": "Портал опубликован",
-    "support_portal.draft": "Портал снят с публикации",
-    "support_portal.articles_imported": "Импортированы статьи портала",
+    "support_portal.created": "audit.action_support_portal_created",
+    "support_portal.published": "audit.action_support_portal_published",
+    "support_portal.draft": "audit.action_support_portal_draft",
+    "support_portal.articles_imported": "audit.action_support_portal_articles_imported",
    # --- Демо-данные ---
-    "demo.install_requested": "Запрошена установка демо-данных",
-    "demo.installed": "Демо-данные установлены",
-    "demo.installed_accounts": "Созданы учётные записи демо-сотрудников",
-    "demo.remove_requested": "Запрошено удаление демо-данных",
-    "demo.removed": "Демо-данные удалены",
+    "demo.install_requested": "audit.action_demo_install_requested",
+    "demo.installed": "audit.action_demo_installed",
+    "demo.installed_accounts": "audit.action_demo_installed_accounts",
+    "demo.remove_requested": "audit.action_demo_remove_requested",
+    "demo.removed": "audit.action_demo_removed",
 }

+def audit_result_label(result: str) -> str:
+    """Подпись результата события или «Неизвестно» для чужого кода."""
+
+    key = AUDIT_RESULT_LABELS.get(result)
+    return t(key) if key else t("audit.result_unknown")
+
+
 AUDIT_RESULT_LABELS = {
-    "SUCCESS": "Выполнено",
-    "DENIED": "Отклонено",
-    "FAILED": "Ошибка",
+    "SUCCESS": "audit.result_success",
+    "DENIED": "audit.result_denied",
+    "FAILED": "audit.result_failed",
 }

 # Что за объект тронули: тип из модели в человеческом виде. Пусто — покажем
 # сам object_type, он и так читается латиницей.
 AUDIT_OBJECT_TYPE_LABELS = {
-    "Organization": "Организация",
-    "HumanUser": "Сотрудник",
-    "EmployeeGroup": "Группа",
-    "Integration": "Интеграция",
-    "Channel": "Канал",
-    "Knowledge": "Знание",
-    "KnowledgeCategory": "Категория знаний",
-    "AgentCard": "Агент",
-    "Conversation": "Диалог",
-    "Contact": "Контакт",
-    "SupportPortal": "Портал",
-    "AccessProfile": "Профиль доступа",
-    "AccessAssignment": "Назначение доступа",
-    "InstanceSettings": "Установка",
-    "StorageSettings": "Хранилище",
+    "Organization": "audit.object_organization",
+    "HumanUser": "audit.object_humanuser",
+    "EmployeeGroup": "audit.object_employeegroup",
+    "Integration": "audit.object_integration",
+    "Channel": "audit.object_channel",
+    "Knowledge": "audit.object_knowledge",
+    "KnowledgeCategory": "audit.object_knowledgecategory",
+    "AgentCard": "audit.object_agentcard",
+    "Conversation": "audit.object_conversation",
+    "Contact": "audit.object_contact",
+    "SupportPortal": "audit.object_supportportal",
+    "AccessProfile": "audit.object_accessprofile",
+    "AccessAssignment": "audit.object_accessassignment",
+    "InstanceSettings": "audit.object_instancesettings",
+    "StorageSettings": "audit.object_storagesettings",
 }


@@ -202,7 +212,8 @@ def audit_category(action: str) -> str:


 def audit_category_label(category: str) -> str:
-    return AUDIT_CATEGORY_LABELS.get(category, "Прочее")
+    key = AUDIT_CATEGORY_LABELS.get(category)
+    return t(key) if key else t("audit.category_other")


 def audit_action_label(action: str) -> str:
@@ -213,7 +224,8 @@ def audit_action_label(action: str) -> str:
    надо дописать сюда.
    """

-    return AUDIT_ACTION_LABELS.get(action, "")
+    key = AUDIT_ACTION_LABELS.get(action)
+    return t(key) if key else ""


 def audit_object_label(object_type: str, object_id: str) -> str:
@@ -221,7 +233,8 @@ def audit_object_label(object_type: str, object_id: str) -> str:

    if not object_type:
        return ""
-    label = AUDIT_OBJECT_TYPE_LABELS.get(object_type, object_type)
+    key = AUDIT_OBJECT_TYPE_LABELS.get(object_type)
+    label = t(key) if key else object_type
    return f"{label} · {object_id}" if object_id else label


@@ -229,6 +242,6 @@ def audit_categories() -> list[dict[str, str]]:
    """Разделы для фильтра — в фиксированном порядке, а не в порядке словаря."""

    return [
-        {"value": key, "label": AUDIT_CATEGORY_LABELS[key]}
+        {"value": key, "label": t(AUDIT_CATEGORY_LABELS[key])}
        for key in AUDIT_CATEGORY_ORDER
    ]
@@ -8,6 +8,7 @@ from chatballs.identity.auth.profile import (
    ChangeTemporaryPasswordView,
    ProfileAppearanceView,
    ProfileAvatarView,
+    ProfileLanguageView,
    ProfilePasswordView,
    ProfileRevokeOtherSessionsView,
    ProfileSessionsView,
@@ -28,6 +29,7 @@ __all__ = [
    "ProfileUpdateView",
    "ProfileAppearanceView",
    "ProfileAvatarView",
+    "ProfileLanguageView",
    "ProfilePasswordView",
    "ProfileTotpStartView",
    "ProfileTotpDisableView",
@@ -1,6 +1,7 @@
 from django.conf import settings
 from rest_framework.request import Request

+from chatballs.i18n import current_language
 from chatballs.identity.avatars import own_avatar_url
 from chatballs.identity.models import HumanUser, Organization, OrganizationMembership
 from chatballs.identity.policy import get_effective_access
@@ -62,6 +63,12 @@ def _user_payload(user: HumanUser) -> dict[str, object]:
        "deliveryMode": settings.CHATBALLS_DELIVERY_MODE,
        "uiTheme": user.ui_theme,
        "uiAccent": user.ui_accent,
+        # Личный выбор языка: пустая строка — «как в организации». Отдельно
+        # отдаётся язык, на котором интерфейс открывается прямо сейчас, — он
+        # уже разрешён по цепочке профиль → организация → установка, и
+        # фронтенду не нужно повторять это правило у себя.
+        "uiLanguage": user.ui_language,
+        "language": current_language(),
        "avatarUrl": own_avatar_url(user),
        "memberships": memberships,
    }
@@ -5,6 +5,7 @@ from rest_framework.request import Request
 from rest_framework.response import Response
 from rest_framework.views import APIView

+from chatballs.i18n import t
 from chatballs.identity.auth.common import _user_payload
 from chatballs.identity.invitation_service import InvitationError, accept_invitation

@@ -23,7 +24,7 @@ class InvitationAcceptView(APIView):
    def post(self, request: Request) -> Response:
        token = str(request.data.get("token", "")).strip()
        if not token:
-            return Response({"detail": "token is required"}, status=400)
+            return Response({"detail": t("identity.token_required")}, status=400)
        try:
            accept_invitation(token=token, user=request.user)
        except InvitationError as error:
@@ -13,6 +13,7 @@ from rest_framework.throttling import ScopedRateThrottle
 from rest_framework.views import APIView

 from chatballs.events.services import DomainEvent, enqueue_event
+from chatballs.i18n import t
 from chatballs.identity.audit import record_audit_event
 from chatballs.identity.event_handlers import PASSWORD_RESET_REQUESTED
 from chatballs.identity.models import AuditResult, HumanUser
@@ -87,7 +88,7 @@ class PasswordResetConfirmView(APIView):
        user = _user_from_reset_link(str(body.get("uid", "")), str(body.get("token", "")))
        if user is None:
            record_audit_event(action="identity.password_reset_failed", result=AuditResult.DENIED, request=request)
-            return Response({"detail": "Ссылка недействительна или истекла"}, status=400)
+            return Response({"detail": t("identity.link_invalid_or_expired")}, status=400)

        new_password = str(body.get("newPassword", ""))
        try:
@@ -2,17 +2,20 @@ from django.contrib.auth import login
 from django.contrib.auth.password_validation import validate_password
 from django.core.exceptions import ValidationError as DjangoValidationError
 from django.http import FileResponse
-from django.utils import timezone
+from django.utils import timezone, translation
 from rest_framework.parsers import FormParser, MultiPartParser
 from rest_framework.permissions import IsAuthenticated
 from rest_framework.request import Request
 from rest_framework.response import Response
 from rest_framework.views import APIView

+from chatballs.i18n import t
+from chatballs.i18n.languages import normalize_language, resolve_language
 from chatballs.identity.audit import record_audit_event
 from chatballs.identity.auth.common import _revoke_other_user_sessions, _user_payload
 from chatballs.identity.avatars import delete_user_avatar, replace_user_avatar
-from chatballs.identity.models import HumanUser
+from chatballs.identity.instance_settings import default_language
+from chatballs.identity.models import HumanUser, OrganizationMembership
 from chatballs.identity.sessions import list_user_sessions
 from chatballs.tenancy.ingress import user_requires_totp

@@ -25,11 +28,11 @@ class ProfileUpdateView(APIView):
        full_name = str(body.get("fullName", "")).strip()
        email = HumanUser.objects.normalize_email(str(body.get("email", "")).strip())
        if not full_name:
-            return Response({"detail": "Full name is required"}, status=400)
+            return Response({"detail": t("admin.full_name_required")}, status=400)
        if not email:
-            return Response({"detail": "Email is required"}, status=400)
+            return Response({"detail": t("admin.email_required")}, status=400)
        if HumanUser.objects.exclude(id=request.user.id).filter(email=email).exists():
-            return Response({"detail": "Email is already used"}, status=400)
+            return Response({"detail": t("admin.email_taken")}, status=400)

        request.user.full_name = full_name
        request.user.email = email
@@ -53,7 +56,7 @@ class ProfileAvatarView(APIView):
    def get(self, request: Request) -> Response | FileResponse:
        user = request.user
        if not user.avatar:
-            return Response({"detail": "Фото не задано"}, status=404)
+            return Response({"detail": t("profile.photo_not_set")}, status=404)
        return FileResponse(
            user.avatar.open("rb"),
            content_type=user.avatar_content_type or "application/octet-stream",
@@ -63,7 +66,7 @@ class ProfileAvatarView(APIView):
    def post(self, request: Request) -> Response:
        upload = request.FILES.get("file")
        if upload is None:
-            return Response({"detail": "Выберите файл фото"}, status=400)
+            return Response({"detail": t("profile.choose_photo_file")}, status=400)
        replace_user_avatar(request.user, upload)
        record_audit_event(
            action="identity.avatar_updated",
@@ -94,7 +97,7 @@ class ProfilePasswordView(APIView):
        current_password = str(body.get("currentPassword", ""))
        new_password = str(body.get("newPassword", ""))
        if not request.user.check_password(current_password):
-            return Response({"detail": "Current password is invalid"}, status=400)
+            return Response({"detail": t("profile.current_password_invalid")}, status=400)
        try:
            validate_password(new_password, user=request.user)
        except DjangoValidationError as error:
@@ -128,7 +131,7 @@ class ProfileTotpStartView(APIView):
    def post(self, request: Request) -> Response:
        if request.user.totp_enabled:
            return Response(
-                {"detail": "TOTP уже включена: сначала отключите её текущим паролем"},
+                {"detail": t("profile.totp_already_on")},
                status=409,
            )
        request.user.totp_secret = ""
@@ -147,10 +150,10 @@ class ProfileTotpDisableView(APIView):
    def post(self, request: Request) -> Response:
        current_password = str(request.data.get("currentPassword", ""))
        if not request.user.check_password(current_password):
-            return Response({"detail": "Current password is invalid"}, status=400)
+            return Response({"detail": t("profile.current_password_invalid")}, status=400)

        if user_requires_totp(request.user.id):
-            return Response({"detail": "TOTP is required by an organization policy"}, status=409)
+            return Response({"detail": t("profile.totp_required_by_policy")}, status=409)
        request.user.totp_enabled = False
        request.user.totp_secret = ""
        request.user.save(update_fields=["totp_enabled", "totp_secret"])
@@ -196,7 +199,7 @@ class ChangeTemporaryPasswordView(APIView):
        current_password = str(body.get("currentPassword", ""))
        new_password = str(body.get("newPassword", ""))
        if not request.user.must_change_password and not request.user.check_password(current_password):
-            return Response({"detail": "Current password is invalid"}, status=400)
+            return Response({"detail": t("profile.current_password_invalid")}, status=400)
        try:
            validate_password(new_password, user=request.user)
        except DjangoValidationError as error:
@@ -230,10 +233,66 @@ class ProfileAppearanceView(APIView):
        theme = str(body.get("theme", request.user.ui_theme)).strip().upper()
        accent = str(body.get("accent", request.user.ui_accent)).strip().lower()
        if theme not in UiTheme.values:
-            return Response({"detail": "Неизвестная тема"}, status=400)
+            return Response({"detail": t("profile.unknown_theme")}, status=400)
        if accent and not re.fullmatch(r"#[0-9a-f]{6}", accent):
-            return Response({"detail": "Акцент — HEX-цвет вида #1677ff"}, status=400)
+            return Response({"detail": t("profile.accent_hex")}, status=400)
        request.user.ui_theme = theme
        request.user.ui_accent = accent
        request.user.save(update_fields=["ui_theme", "ui_accent"])
        return Response({"authenticated": True, "user": _user_payload(request.user)})
+
+
+class ProfileLanguageView(APIView):
+    """Язык интерфейса — личная настройка сотрудника.
+
+    Пустое значение возвращает человека к языку организации: это не «русский»,
+    а снятие личного выбора, и после смены языка организации такой сотрудник
+    поедет за ней, а тот, кто выбрал язык явно, — нет.
+    """
+
+    permission_classes = [IsAuthenticated]
+
+    def post(self, request: Request) -> Response:
+        raw = str(request.data.get("language", "")).strip()
+        language = normalize_language(raw)
+        if raw and not language:
+            return Response({"detail": t("settings.language_unsupported")}, status=400)
+        request.user.ui_language = language
+        request.user.save(update_fields=["ui_language"])
+        record_audit_event(
+            action="identity.profile_language_changed",
+            actor=request.user,
+            object_type="HumanUser",
+            object_id=str(request.user.id),
+            request=request,
+        )
+        # Ответ уже на новом языке: интерфейс перерисуется по нему сразу, не
+        # дожидаясь следующего запроса.
+        resolved = resolve_language(
+            user_language=language,
+            organization_language=_request_organization_language(request),
+            instance_language=default_language(),
+            accept_language=request.headers.get("Accept-Language"),
+        )
+        with translation.override(resolved):
+            return Response({"authenticated": True, "user": _user_payload(request.user)})
+
+
+def _request_organization_language(request: Request) -> str:
+    """Язык организации запроса, если он у этого запроса вообще есть.
+
+    Профиль открывается вне организации, поэтому tenant_context здесь обычно
+    пуст: тогда язык берётся из единственного членства, а при нескольких —
+    из того, что старше, чтобы ответ не зависел от порядка выборки.
+    """
+
+    context = getattr(request, "tenant_context", None)
+    if context is not None:
+        return context.organization.language or ""
+    membership = (
+        OrganizationMembership.objects.select_related("organization")
+        .filter(user=request.user, blocked_at__isnull=True)
+        .order_by("created_at", "id")
+        .first()
+    )
+    return membership.organization.language if membership is not None else ""
@@ -9,6 +9,7 @@ from rest_framework.response import Response
 from rest_framework.throttling import ScopedRateThrottle
 from rest_framework.views import APIView

+from chatballs.i18n import current_language, t
 from chatballs.identity.audit import record_audit_event
 from chatballs.identity.auth.common import _challenge_payload, _user_payload
 from chatballs.identity.auth.totp_utils import TOTP_SESSION_KEY, TOTP_STARTED_KEY
@@ -22,7 +23,12 @@ class SessionView(APIView):

    def get(self, request: Request) -> Response:
        if not request.user.is_authenticated:
-            return Response({"authenticated": False})
+            # Язык установки нужен и до входа: логин и сброс пароля — экраны
+            # самой коробки, и на английской машине они должны открываться на
+            # языке установки, а не на языке браузера. Без этого фронтенд знал
+            # бы только про браузер и расходился бы с бэкендом, который язык
+            # установки учитывает.
+            return Response({"authenticated": False, "language": current_language()})
        return Response({"authenticated": True, "user": _user_payload(request.user)})


@@ -42,7 +48,7 @@ class LoginView(APIView):
        user = authenticate(request, username=email, password=password)
        if user is None:
            record_audit_event(action="identity.login_failed", result=AuditResult.DENIED, request=request)
-            return Response({"detail": "Invalid credentials"}, status=401)
+            return Response({"detail": t("identity.invalid_credentials")}, status=401)
        if user.totp_enabled:
            request.session[TOTP_SESSION_KEY] = user.id
            # Шаг с кодом ждёт не вечно: см. TOTP_CHALLENGE_TTL_SECONDS.
@@ -10,6 +10,7 @@ from rest_framework.response import Response
 from rest_framework.throttling import ScopedRateThrottle
 from rest_framework.views import APIView

+from chatballs.i18n import t
 from chatballs.identity.audit import record_audit_event
 from chatballs.identity.auth.common import _user_payload
 from chatballs.identity.auth.totp_utils import (
@@ -43,7 +44,7 @@ class TotpSetupView(APIView):

    def get(self, request: Request) -> Response:
        if request.user.totp_enabled:
-            return Response({"detail": "TOTP is already enabled"}, status=400)
+            return Response({"detail": t("profile.totp_enabled_already")}, status=400)

        secret = _ensure_totp_secret(request.user)
        account_name = request.user.email
@@ -76,7 +77,7 @@ class TotpConfirmView(APIView):
                result=AuditResult.DENIED,
                request=request,
            )
-            return Response({"detail": "Invalid TOTP code"}, status=400)
+            return Response({"detail": t("identity.invalid_totp_code")}, status=400)

        request.user.totp_enabled = True
        request.user.save(update_fields=["totp_enabled"])
@@ -99,7 +100,7 @@ class TotpVerifyView(APIView):
        pending_user_id = request.session.get(TOTP_SESSION_KEY)
        if not pending_user_id or _challenge_expired(request):
            _drop_challenge(request)
-            return Response({"detail": "TOTP challenge is not active"}, status=401)
+            return Response({"detail": t("identity.totp_challenge_inactive")}, status=401)

        try:
            # is_active обязателен: пароль приняли раньше, и без этой проверки
@@ -109,7 +110,7 @@ class TotpVerifyView(APIView):
            )
        except HumanUser.DoesNotExist:
            _drop_challenge(request)
-            return Response({"detail": "TOTP challenge is not active"}, status=401)
+            return Response({"detail": t("identity.totp_challenge_inactive")}, status=401)

        if not user.totp_enabled or not accept_totp_code(
            user, str(request.data.get("code", ""))
@@ -120,7 +121,7 @@ class TotpVerifyView(APIView):
                result=AuditResult.DENIED,
                request=request,
            )
-            return Response({"detail": "Invalid TOTP code"}, status=400)
+            return Response({"detail": t("identity.invalid_totp_code")}, status=400)

        # Отметку «последний код принят …» для карточки 2FA (кадр P1) уже
        # проставил accept_totp_code вместе с номером интервала.
@@ -11,6 +11,7 @@ urlpatterns = [
    path("password-reset/confirm/", auth.PasswordResetConfirmView.as_view(), name="auth-password-reset-confirm"),
    path("profile/update/", auth.ProfileUpdateView.as_view(), name="auth-profile-update"),
    path("profile/appearance/", auth.ProfileAppearanceView.as_view(), name="auth-profile-appearance"),
+    path("profile/language/", auth.ProfileLanguageView.as_view(), name="auth-profile-language"),
    path("profile/avatar/", auth.ProfileAvatarView.as_view(), name="auth-profile-avatar"),
    path("profile/password/", auth.ProfilePasswordView.as_view(), name="auth-profile-password"),
    path("profile/totp/start/", auth.ProfileTotpStartView.as_view(), name="auth-profile-totp-start"),
@@ -16,6 +16,7 @@ from django.core.files.base import ContentFile
 from django.core.files.uploadedfile import UploadedFile
 from rest_framework.exceptions import ValidationError

+from chatballs.i18n import t
 from chatballs.identity.models import HumanUser

 MAX_AVATAR_BYTES = 2 * 1024 * 1024
@@ -65,12 +66,12 @@ def image_type(data: bytes) -> tuple[str, str] | None:
 def replace_user_avatar(user: HumanUser, upload: UploadedFile) -> HumanUser:
    data = upload.read()
    if not data:
-        raise ValidationError({"file": "Выберите файл фото"})
+        raise ValidationError({"file": t("profile.choose_photo_file")})
    if len(data) > MAX_AVATAR_BYTES:
-        raise ValidationError({"file": "Размер фото не должен превышать 2 МБ"})
+        raise ValidationError({"file": t("profile.photo_too_large")})
    detected = image_type(data)
    if detected is None:
-        raise ValidationError({"file": "Поддерживаются PNG, JPEG и WebP"})
+        raise ValidationError({"file": t("admin.image_formats")})
    content_type, suffix = detected
    return set_user_avatar(user, data, content_type, suffix)

@@ -0,0 +1,384 @@
+{
+  "schemaVersion": 1,
+  "_comment": "English twin of data/ru/channels_ai.json. Agents = cards over Channel+AIAgent (ADR-HUB-0041 §4). Connections are dialog entry points; the LLM provider is shared across the organization (BYOK). There are two web widgets: the anonymous one on the site (agent «Consultant») and the authenticated one in the customer account (agent «Site support», mandatory-identity policy — SPEC-HUB-0027 P4/P5). The demo LLM provider is the built-in «Demo provider» (no key): agents answer from the knowledge base straight after installation.",
+  "llmProvider": {
+    "key": "llm",
+    "provider": "DEMO",
+    "name": "Demo provider",
+    "secret": "",
+    "config": {},
+    "status": "OK"
+  },
+  "agents": [
+    {
+      "key": "consultant",
+      "code": "consultant",
+      "name": "Consultant",
+      "group": "operators",
+      "aiStatus": "ACTIVE",
+      "persona": "You are a consultant at Nord Atelier. The atelier makes curtains, voile and home textiles to measure and delivers across the country.",
+      "tone": "Friendly, brief, no officialese. Use the client's name if they have given it.",
+      "instructions": "Answer only from the atelier's knowledge. Quote lead times, prices and order status only from the knowledge base; if there is no answer, say you will check with colleagues and hand the dialog to a member of staff. Do not promise discounts. If the client asks for a human, hand the dialog over straight away.",
+      "knowledge": [
+        "pricing",
+        "fabrics",
+        "measure",
+        "delivery",
+        "care"
+      ],
+      "portalArticles": [
+        "how-to-measure",
+        "lead-times"
+      ],
+      "limits": {
+        "dailyCostUsd": 300
+      },
+      "createdDaysAgo": 41
+    },
+    {
+      "key": "support",
+      "code": "site-support",
+      "name": "Site support",
+      "group": "support",
+      "aiStatus": "ACTIVE",
+      "persona": "You are the support assistant for the Nord Atelier website: accounts, orders, payment, delivery, returns.",
+      "tone": "Calm and to the point.",
+      "instructions": "Check the knowledge about accounts and returns first. For questions about a specific order with no order number, ask for the number. Complaints about quality go to a member of staff with a note.",
+      "knowledge": [
+        "delivery",
+        "returns",
+        "account"
+      ],
+      "portalArticles": [
+        "returns-and-exchanges",
+        "your-account"
+      ],
+      "limits": {},
+      "createdDaysAgo": 30,
+      "policy": {
+        "allow_anonymous_sessions": true,
+        "allow_self_reported_contact": true
+      }
+    },
+    {
+      "key": "portal",
+      "code": "portal",
+      "name": "Customer account",
+      "group": "support",
+      "aiStatus": "ACTIVE",
+      "persona": "You are the assistant for the Nord Atelier customer account: orders, payment, statuses, delivery, returns.",
+      "tone": "Calm and to the point.",
+      "instructions": "Rely on the knowledge about accounts and orders. Ask for the order number if it has not been given. Complaints about payment go to a member of staff.",
+      "knowledge": [
+        "account",
+        "delivery",
+        "returns"
+      ],
+      "portalArticles": [
+        "your-account",
+        "returns-and-exchanges"
+      ],
+      "limits": {},
+      "createdDaysAgo": 28,
+      "policy": {
+        "allow_anonymous_sessions": true,
+        "allow_self_reported_contact": true
+      }
+    },
+    {
+      "key": "reception",
+      "code": "reception",
+      "name": "Front desk",
+      "group": null,
+      "aiStatus": "DRAFT",
+      "persona": "",
+      "tone": "",
+      "instructions": "",
+      "knowledge": [],
+      "portalArticles": [],
+      "limits": {},
+      "createdDaysAgo": 3
+    },
+    {
+      "key": "legacy",
+      "code": "old-line",
+      "name": "Old line (Instagram)",
+      "group": "vip",
+      "isActive": false,
+      "aiStatus": "DISABLED",
+      "persona": "Atelier consultant.",
+      "tone": "",
+      "instructions": "This channel was closed in the spring of 2026.",
+      "knowledge": [
+        "pricing"
+      ],
+      "portalArticles": [],
+      "limits": {},
+      "createdDaysAgo": 180
+    }
+  ],
+  "connections": [
+    {
+      "key": "tg",
+      "provider": "TELEGRAM",
+      "name": "Telegram · @NordAtelierBot",
+      "agent": "consultant",
+      "status": "OK",
+      "secret": "0000000000:DEMO-token-not-real",
+      "config": {
+        "username": "NordAtelierBot"
+      },
+      "createdDaysAgo": 40
+    },
+    {
+      "key": "max",
+      "provider": "MAX",
+      "name": "MAX · Nord Atelier",
+      "agent": "consultant",
+      "status": "OK",
+      "secret": "demo-max-token",
+      "config": {},
+      "createdDaysAgo": 25
+    },
+    {
+      "key": "email",
+      "provider": "EMAIL",
+      "name": "Mail · info@nord-atelier.com",
+      "agent": "support",
+      "status": "OK",
+      "secret": "demo-imap-password",
+      "config": {
+        "email": "info@nord-atelier.com",
+        "imapHost": "imap.nord-atelier.com",
+        "smtpHost": "smtp.nord-atelier.com"
+      },
+      "createdDaysAgo": 29
+    },
+    {
+      "key": "web",
+      "provider": "WEB",
+      "name": "Web Chat · nord-atelier.com",
+      "agent": "consultant",
+      "status": "OK",
+      "config": {
+        "title": "Nord Atelier",
+        "greeting": "Hello! We can help with fabrics, lead times and orders.",
+        "quick_replies": [
+          "Lead times",
+          "Order status",
+          "Returns"
+        ],
+        "allowed_origins": [
+          "https://nord-atelier.com"
+        ]
+      },
+      "createdDaysAgo": 28
+    },
+    {
+      "key": "web_help",
+      "provider": "WEB",
+      "name": "Web Chat · Help section",
+      "agent": "support",
+      "status": "OK",
+      "config": {
+        "title": "Nord Atelier",
+        "greeting": "Hello! We can help with fabrics, lead times and orders.",
+        "quick_replies": [
+          "Lead times",
+          "Order status",
+          "Returns"
+        ],
+        "allowed_origins": [
+          "https://nord-atelier.com"
+        ]
+      },
+      "createdDaysAgo": 28
+    },
+    {
+      "key": "web_account",
+      "provider": "WEB",
+      "name": "Web Chat · customer account",
+      "agent": "portal",
+      "status": "OK",
+      "config": {
+        "title": "Support · Nord Atelier",
+        "greeting": "Hello! We can see your order — how can we help?",
+        "quick_replies": [
+          "Order status",
+          "Change the address",
+          "Returns"
+        ],
+        "allowed_origins": [
+          "https://nord-atelier.com",
+          "https://account.nord-atelier.com"
+        ]
+      },
+      "createdDaysAgo": 27
+    },
+    {
+      "key": "tg_delivery",
+      "provider": "TELEGRAM",
+      "name": "Telegram · delivery bot",
+      "agent": "reception",
+      "status": "ERROR",
+      "lastError": "401 Unauthorized: bot token was revoked in @BotFather",
+      "secret": "1111111111:DEMO-revoked",
+      "config": {
+        "username": "NordAtelierDeliveryBot"
+      },
+      "createdDaysAgo": 3
+    }
+  ],
+  "knowledgeCategories": [
+    {
+      "key": "sewing",
+      "name": "Making and fabrics",
+      "children": [
+        {
+          "key": "measure",
+          "name": "Measuring and quotes"
+        },
+        {
+          "key": "fabrics",
+          "name": "Fabrics"
+        }
+      ]
+    },
+    {
+      "key": "orders",
+      "name": "Orders and delivery",
+      "children": [
+        {
+          "key": "delivery",
+          "name": "Delivery"
+        },
+        {
+          "key": "returns",
+          "name": "Returns and exchanges"
+        }
+      ]
+    },
+    {
+      "key": "site",
+      "name": "Website and customer account"
+    }
+  ],
+  "knowledge": [
+    {
+      "key": "pricing",
+      "category": "measure",
+      "title": "Quoting for made-to-measure curtains",
+      "description": "The pricing formula, fullness ratios, minimum order",
+      "content": "Price = fabric (metres × price per metre) + making (by the finished width) + hardware.\n\nFullness ratio: 1.5 for heavy curtains, 2.0–2.5 for voile. Fabric width including fullness = track width × ratio.\n\nMaking: £18 per linear metre of finished width for curtains, £14 for voile. The bottom hem is included. Eyelets — £3.50 each, heading tape — £4.80 per metre.\n\nMinimum order — £120. The consultant quotes from the window width and drop; a measuring visit within London is free on orders over £600.",
+      "attachments": [
+        "price-estimate.md"
+      ],
+      "createdDaysAgo": 40
+    },
+    {
+      "key": "fabrics",
+      "category": "fabrics",
+      "title": "Fabric catalogue 2026",
+      "description": "Curtain and voile fabrics in stock, prices per metre",
+      "content": "Curtain fabrics: Nord blackout (100% blackout, £59/m, 14 colours), linen blend (£35/m, 9 colours), Verona velvet (£87/m, 6 colours), canvas (£27/m, 12 colours).\n\nVoile: sheer voile (£15/m), Greek net (£20/m), linen voile (£29/m).\n\nEvery fabric is 280–300 cm wide. We post samples free of charge — up to 5 of them.",
+      "attachments": [
+        {
+          "file": "fabric-catalogue-2026.pdf",
+          "text": "fabric-catalogue-2026.txt",
+          "contentType": "application/pdf"
+        }
+      ],
+      "createdDaysAgo": 38
+    },
+    {
+      "key": "measure",
+      "category": "measure",
+      "title": "How to measure your windows yourself",
+      "description": "Client instructions: track, drop, allowances",
+      "content": "1. Measure the length of the track from end to end (not the window!).\n2. Measure the drop from the track hook (or the top of the pole) to the length you want: to the sill (minus 1 cm), to the floor (minus 1–2 cm) or puddled on the floor (+3–5 cm).\n3. For eyelet curtains add 3 cm at the top.\n4. Photograph the whole window — a consultant will check the figures.",
+      "attachments": [],
+      "createdDaysAgo": 36
+    },
+    {
+      "key": "delivery",
+      "category": "delivery",
+      "title": "Making times and delivery",
+      "description": "Making 5–7 working days, delivery by DPD and courier",
+      "content": "Making takes 5–7 working days once the quote is agreed and paid. Express making (3 working days) costs +30% of the making price and only if the fabric is in stock.\n\nDelivery: within London by courier £15 (free over £400), slots 10:00–13:00, 13:00–17:00, 17:00–20:00; the courier calls an hour ahead. Across the country — DPD to a pickup point or to your door, 3–5 working days from dispatch, and the tracking number arrives by e-mail on the day of dispatch. Manchester, Birmingham and Leeds are usually 3 days.\n\nMoving a delivery slot is free of charge, no later than 18:00 the day before.",
+      "attachments": [
+        "delivery-and-payment.txt"
+      ],
+      "createdDaysAgo": 35
+    },
+    {
+      "key": "returns",
+      "category": "returns",
+      "title": "Returns and exchanges",
+      "description": "14 days, and the terms for made-to-measure items",
+      "content": "Ready-made items (cushions, throws from the catalogue) — returnable within 14 days with no reason given, provided they have not been used.\n\nItems made to your own measurements cannot be returned (bespoke goods are exempt from the cancellation right under the Consumer Contracts Regulations), except where they are faulty or do not match the agreed order: wrong colour or size, defects in the making. In that case we remake them free of charge or exchange them for another colour in stock, in 5–7 working days; if the client prefers, we refund the money within 10 days.\n\nA claim needs the order number and photographs of the item. The claim is raised by a member of staff, not by the AI.",
+      "attachments": [],
+      "createdDaysAgo": 33
+    },
+    {
+      "key": "care",
+      "category": "fabrics",
+      "title": "Caring for your curtains",
+      "description": "Washing, ironing and cleaning by fabric type",
+      "content": "Blackout: delicate wash at 30°, no spin, iron on the reverse at the lowest temperature. Linen: wash at 40°, shrinkage of up to 3% is allowed for in the measurements. Velvet: dry clean only. Voile: wash at 30° in a mesh bag, dry it on the track.",
+      "attachments": [],
+      "createdDaysAgo": 20
+    },
+    {
+      "key": "account",
+      "category": "site",
+      "title": "The customer account on the website",
+      "description": "Registration, password recovery, order statuses",
+      "content": "You sign in with your e-mail. The password reset message comes from no-reply@nord-atelier.com within 5 minutes; if it has not arrived, check your spam folder and that the address is right. You can ask for another one after 10 minutes.\n\nOrder statuses in the account: “Awaiting payment” → “In production” → “Ready” → “Handed to the courier” → “Delivered”. The delivery address can be changed up to the “Handed to the courier” status — through a support agent.",
+      "attachments": [],
+      "createdDaysAgo": 28
+    },
+    {
+      "key": "old_prices",
+      "category": "measure",
+      "title": "2024 price list (out of date)",
+      "description": "Old prices — switched off, kept for the record",
+      "content": "Making £15/m, voile £11/m. Do not use.",
+      "attachments": [],
+      "isEnabled": false,
+      "createdDaysAgo": 400
+    }
+  ],
+  "usage": {
+    "_comment": "Thirty days of LLM call history for the «AI usage» section: generated from a template.",
+    "days": 30,
+    "chatPerDay": {
+      "consultant": [
+        6,
+        14
+      ],
+      "support": [
+        3,
+        9
+      ],
+      "portal": [
+        1,
+        4
+      ]
+    },
+    "embeddingPerDay": [
+      0,
+      2
+    ],
+    "model": "openai/gpt-4o-mini",
+    "promptTokens": [
+      600,
+      1800
+    ],
+    "completionTokens": [
+      80,
+      260
+    ],
+    "costMicrosPerToken": 0.6,
+    "failuresTotal": 3
+  }
+}
@@ -0,0 +1,954 @@
+{
+  "schemaVersion": 1,
+  "_comment": "English twin of data/ru/conversations.json: the same people, the same dialogs, the same frames — only the prose differs. Seven visible dialogs mirror frames A–H and A1 one for one; Maria's contact history is frame F. The remaining features (the VIP group, HTML mail, the portal and the customer-account snapshot, spam) are covered by archived and spam dialogs that are not in the main list. Time is relative: «now» = the moment of installation.",
+  "contacts": [
+    {
+      "key": "maria",
+      "name": "Maria Sokolova",
+      "phone": "+44 7700 900140",
+      "avatar": "maria-sokolova.jpg",
+      "description": "Order 4471 — a set of curtains. A regular since August, prefers Telegram.",
+      "createdDaysAgo": 34
+    },
+    {
+      "key": "maria-duplicate",
+      "name": "Maria S.",
+      "phone": "+44 7700 900140",
+      "description": "Duplicate: came in from the website, not yet recognised by phone number.",
+      "createdDaysAgo": 12
+    },
+    {
+      "key": "irina",
+      "name": "Irina Levina",
+      "phone": "",
+      "avatar": "irina-levina.jpg",
+      "description": "Textile buyer for a hotel. Asked us to write by e-mail rather than call.",
+      "company": "The Riverside Hotel",
+      "createdDaysAgo": 60
+    },
+    {
+      "key": "artem",
+      "name": "Artem Gusev",
+      "phone": "",
+      "createdDaysAgo": 3
+    },
+    {
+      "key": "olga",
+      "name": "Olga Melnik",
+      "phone": "+44 7700 900731",
+      "avatar": "olga-melnik.jpg",
+      "createdDaysAgo": 12
+    },
+    {
+      "key": "sergey",
+      "name": "Sergey Krylov",
+      "phone": "+44 7700 900912",
+      "avatar": "sergey-krylov.jpg",
+      "city": "Manchester",
+      "createdDaysAgo": 9
+    },
+    {
+      "key": "viktor",
+      "name": "Viktor Panov",
+      "phone": "+44 20 7946 0210",
+      "company": "House of Textiles Ltd",
+      "city": "London",
+      "description": "Wholesale customer: a 46-room hotel. Handled by Kirill Volkov.",
+      "createdDaysAgo": 90
+    },
+    {
+      "key": "polina",
+      "name": "Polina Rakitina",
+      "phone": "",
+      "createdDaysAgo": 1
+    },
+    {
+      "key": "spammer",
+      "name": "",
+      "phone": "",
+      "createdDaysAgo": 0
+    }
+  ],
+  "connectionIdentities": [
+    {
+      "key": "maria_tg",
+      "contact": "maria",
+      "connection": "tg",
+      "externalUserId": "482913001",
+      "displayName": "Maria Sokolova",
+      "username": "maria_s"
+    },
+    {
+      "key": "irina_email",
+      "contact": "irina",
+      "connection": "email",
+      "externalUserId": "irina@housetextiles.example",
+      "displayName": "Irina Levina"
+    },
+    {
+      "key": "artem_max",
+      "contact": "artem",
+      "connection": "max",
+      "externalUserId": "58102277",
+      "displayName": "Artem Gusev"
+    },
+    {
+      "key": "olga_tg",
+      "contact": "olga",
+      "connection": "tg",
+      "externalUserId": "482913004",
+      "displayName": "Olga Melnik",
+      "username": "olga_s"
+    },
+    {
+      "key": "sergey_tg",
+      "contact": "sergey",
+      "connection": "tg",
+      "externalUserId": "482913007",
+      "displayName": "Sergey Krylov",
+      "username": "sergey_s"
+    },
+    {
+      "key": "sergey_web",
+      "contact": "sergey",
+      "connection": "web_account",
+      "externalUserId": "web-sess-4402a",
+      "displayName": "Sergey Krylov"
+    },
+    {
+      "key": "viktor_tg",
+      "contact": "viktor",
+      "connection": "tg",
+      "externalUserId": "482913006",
+      "displayName": "Viktor Panov",
+      "username": "v_panov"
+    },
+    {
+      "key": "polina_email",
+      "contact": "polina",
+      "connection": "email",
+      "externalUserId": "polina.rakitina@example.com",
+      "displayName": "Polina Rakitina"
+    },
+    {
+      "key": "spam_tg",
+      "contact": "spammer",
+      "connection": "tg",
+      "externalUserId": "900000001",
+      "displayName": "Instant Credit",
+      "username": "credit_fast_24"
+    }
+  ],
+  "labels": [
+    {
+      "key": "delivery",
+      "name": "delivery",
+      "color": "#1677ff"
+    },
+    {
+      "key": "return",
+      "name": "returns",
+      "color": "#eb2f96"
+    },
+    {
+      "key": "account",
+      "name": "account",
+      "color": "#13c2c2"
+    },
+    {
+      "key": "address",
+      "name": "address",
+      "color": "#fa8c16"
+    },
+    {
+      "key": "mail",
+      "name": "mail",
+      "color": "#722ed1"
+    },
+    {
+      "key": "order4390",
+      "name": "order 4390",
+      "color": "#52c41a"
+    },
+    {
+      "key": "urgent",
+      "name": "urgent",
+      "color": "#f5222d"
+    },
+    {
+      "key": "vip",
+      "name": "vip",
+      "color": "#b8860b"
+    },
+    {
+      "key": "wholesale",
+      "name": "wholesale",
+      "color": "#0f9d58"
+    }
+  ],
+  "replyTemplates": [
+    {
+      "title": "Greeting",
+      "text": "Hello! My name is {name}, I am a consultant at Nord Atelier. Could you tell me the track width and the window drop — I will work out a quote."
+    },
+    {
+      "title": "Lead times",
+      "text": "Making takes 5–7 working days after payment. An express option in 3 days is possible if the fabric is in stock, at +30% of the making price."
+    },
+    {
+      "title": "DPD delivery",
+      "text": "We send by DPD to a pickup point or to your door, 3–5 working days. The tracking number arrives by e-mail on the day of dispatch, by 19:00."
+    },
+    {
+      "title": "Moving a delivery",
+      "text": "We have moved your delivery to {date}, slot {slot}. The courier will call an hour ahead. Please confirm that the slot works for you."
+    },
+    {
+      "title": "Returns — asking for photos",
+      "text": "I am sorry this happened. Please send the order number and photographs of the item in daylight — I will raise a claim for a remake or an exchange."
+    },
+    {
+      "title": "Fabric samples",
+      "text": "We will post up to 5 samples free of charge. Tell us which fabrics and colours you would like, and the address with the postcode."
+    },
+    {
+      "title": "Closing a dialog",
+      "text": "Glad to have helped! If anything else comes up, write to us — I answer during working hours, 10:00 to 20:00."
+    }
+  ],
+  "conversations": [
+    {
+      "key": "maria_delivery",
+      "agent": "consultant",
+      "connection": "tg",
+      "contact": "maria",
+      "identity": "maria_tg",
+      "externalChatId": "482913001",
+      "lifecycle": "OPEN",
+      "controlMode": "AI",
+      "expectedResponder": "CUSTOMER",
+      "group": "operators",
+      "priority": "HIGH",
+      "labels": [
+        "delivery",
+        "urgent"
+      ],
+      "note": "",
+      "createdMinutesAgo": 12,
+      "lastActivityMinutesAgo": 4,
+      "readBy": [],
+      "previousConversation": "maria_measure",
+      "messages": [
+        {
+          "author": "CONTACT",
+          "text": "Hello! I ordered a set of curtains from you, order number 4471. How long does delivery to Manchester take?",
+          "minutesAgo": 12
+        },
+        {
+          "author": "AI",
+          "text": "Hello, Maria. Delivery to Manchester takes 3–5 working days from dispatch. Order 4471 is being made at the moment — we expect to send it on Thursday.",
+          "minutesAgo": 12
+        },
+        {
+          "author": "CONTACT",
+          "text": "Can it be sped up? I need it by Saturday.",
+          "minutesAgo": 5
+        },
+        {
+          "author": "AI",
+          "text": "I understand. Express delivery is possible, but the terms are best checked with a specialist — I am passing the question to my colleagues.",
+          "minutesAgo": 5
+        },
+        {
+          "author": "CONTACT",
+          "text": "All right, I will wait",
+          "minutesAgo": 4
+        }
+      ]
+    },
+    {
+      "key": "dmitry_custom",
+      "agent": "consultant",
+      "connection": "web",
+      "webGuest": true,
+      "guestName": "Dmitry Orlov",
+      "guestAvatar": "dmitry-orlov.png",
+      "lifecycle": "OPEN",
+      "controlMode": "PAUSED",
+      "expectedResponder": "OPERATOR",
+      "group": "operators",
+      "priority": "MEDIUM",
+      "labels": [],
+      "note": "",
+      "createdMinutesAgo": 12,
+      "lastActivityMinutesAgo": 6,
+      "readBy": [],
+      "messages": [
+        {
+          "author": "CONTACT",
+          "text": "Good afternoon. Can I order curtains made to my own measurements?",
+          "minutesAgo": 12
+        },
+        {
+          "author": "AI",
+          "text": "Good afternoon! Yes, we make to measure. Tell me the window width and drop and I will work out the price.",
+          "minutesAgo": 11.7
+        },
+        {
+          "author": "CONTACT",
+          "text": "I would like to talk to a human",
+          "minutesAgo": 6
+        },
+        {
+          "author": "SYSTEM",
+          "text": "The AI handed the dialog over: the client asked for a member of staff",
+          "minutesAgo": 6
+        }
+      ]
+    },
+    {
+      "key": "irina_status",
+      "agent": "support",
+      "connection": "email",
+      "contact": "irina",
+      "identity": "irina_email",
+      "externalChatId": "irina@housetextiles.example",
+      "lifecycle": "OPEN",
+      "controlMode": "HUMAN",
+      "expectedResponder": "CUSTOMER",
+      "assignedOperator": "elena",
+      "group": "support",
+      "priority": "HIGH",
+      "labels": [
+        "order4390",
+        "mail"
+      ],
+      "note": "A regular, order 4390. Asked us to write by e-mail rather than call.",
+      "createdMinutesAgo": 54,
+      "lastActivityMinutesAgo": 26,
+      "readBy": [
+        "elena"
+      ],
+      "transportMeta": {
+        "subject": "Order 4390 — the status is not changing"
+      },
+      "messages": [
+        {
+          "author": "CONTACT",
+          "text": "Hello. Order 4390 was paid for a week ago and the status is not changing. What is going on?",
+          "minutesAgo": 54,
+          "contentHtml": "<p>Hello.</p><p>Order <b>4390</b> was paid for a week ago and the status is not changing. What is going on?</p><p>— Irina Levina, purchasing</p>"
+        },
+        {
+          "author": "AI",
+          "text": "Hello, Irina. I can see order 4390 with the status “In production”. I will check the timing with my colleagues — passing the question on.",
+          "minutesAgo": 54,
+          "contentHtml": "<p>Hello, Irina.</p><p>I can see order 4390 with the status “In production”. I will check the timing with my colleagues — passing the question on.</p>"
+        },
+        {
+          "author": "SYSTEM",
+          "text": "Elena Kuznetsova took the dialog",
+          "minutesAgo": 43
+        },
+        {
+          "author": "OPERATOR",
+          "text": "Good afternoon, Irina. I have checked: the order has already gone to the courier, and the tracking number will arrive by e-mail today before 19:00.",
+          "minutesAgo": 26,
+          "authorUser": "elena",
+          "contentHtml": "<p>Good afternoon, Irina.</p><p>I have checked: the order has already gone to the courier, and the tracking number will arrive by e-mail today before 19:00.</p>"
+        }
+      ]
+    },
+    {
+      "key": "artem_prepay",
+      "agent": "consultant",
+      "connection": "max",
+      "contact": "artem",
+      "identity": "artem_max",
+      "externalChatId": "58102277",
+      "lifecycle": "OPEN",
+      "controlMode": "AI",
+      "expectedResponder": "CUSTOMER",
+      "priority": "NONE",
+      "labels": [],
+      "note": "",
+      "createdMinutesAgo": 52,
+      "lastActivityMinutesAgo": 43,
+      "readBy": [
+        "elena",
+        "anna"
+      ],
+      "messages": [
+        {
+          "author": "CONTACT",
+          "text": "Hello! I would like to order Roman blinds for the kitchen, two windows. How does payment work?",
+          "minutesAgo": 52
+        },
+        {
+          "author": "CONTACT",
+          "kind": "voice",
+          "voice": {
+            "file": "artem-prepayment.ogg",
+            "contentType": "audio/ogg",
+            "durationSeconds": 4,
+            "transcriptStatus": "READY",
+            "transcript": "What deposit do you take? Ideally give it to me as a percentage."
+          },
+          "minutesAgo": 50
+        },
+        {
+          "author": "AI",
+          "text": "Hello, Artem! The deposit is 50% when you place the order, and the rest after the fitting, before delivery. You can pay by card or by bank transfer.",
+          "minutesAgo": 49
+        },
+        {
+          "author": "CONTACT",
+          "text": "Thanks, got it",
+          "minutesAgo": 43
+        }
+      ]
+    },
+    {
+      "key": "guest_password",
+      "agent": "support",
+      "connection": "web_help",
+      "webGuest": true,
+      "lifecycle": "OPEN",
+      "controlMode": "HUMAN",
+      "expectedResponder": "CUSTOMER",
+      "assignedOperator": "anna",
+      "group": "support",
+      "priority": "LOW",
+      "labels": [
+        "account"
+      ],
+      "note": "",
+      "createdMinutesAgo": 94,
+      "lastActivityMinutesAgo": 77,
+      "readBy": [
+        "anna"
+      ],
+      "messages": [
+        {
+          "author": "CONTACT",
+          "text": "The password reset e-mail for my account never arrives",
+          "minutesAgo": 94
+        },
+        {
+          "author": "AI",
+          "text": "Please check your spam folder. If it is not there, I will pass the request to a member of staff.",
+          "minutesAgo": 94
+        },
+        {
+          "author": "CONTACT",
+          "text": "There is nothing there",
+          "minutesAgo": 82
+        },
+        {
+          "author": "SYSTEM",
+          "text": "Anna Kim took the dialog",
+          "minutesAgo": 79
+        },
+        {
+          "author": "OPERATOR",
+          "text": "I will check with my colleagues which address is on the account.",
+          "minutesAgo": 77,
+          "authorUser": "anna"
+        }
+      ]
+    },
+    {
+      "key": "olga_return",
+      "agent": "consultant",
+      "connection": "tg",
+      "contact": "olga",
+      "identity": "olga_tg",
+      "externalChatId": "482913004",
+      "lifecycle": "OPEN",
+      "controlMode": "HUMAN",
+      "expectedResponder": "CUSTOMER",
+      "assignedOperator": "elena",
+      "group": "operators",
+      "priority": "NONE",
+      "labels": [
+        "return"
+      ],
+      "note": "",
+      "createdMinutesAgo": 122,
+      "lastActivityMinutesAgo": 105,
+      "readBy": [
+        "elena"
+      ],
+      "messages": [
+        {
+          "author": "CONTACT",
+          "text": "Hello! I have received the curtains, but the width is not what I ordered.",
+          "minutesAgo": 122
+        },
+        {
+          "author": "AI",
+          "text": "Hello, Olga. I am sorry about that. Exchanges and returns are possible within 14 days — I am passing the question to a member of staff.",
+          "minutesAgo": 122
+        },
+        {
+          "author": "CONTACT",
+          "kind": "voice",
+          "voice": {
+            "file": "olga-eighty-cm.ogg",
+            "contentType": "audio/ogg",
+            "durationSeconds": 3,
+            "transcriptStatus": "READY",
+            "transcript": "Can you see? Exactly eighty centimetres!"
+          },
+          "minutesAgo": 114
+        },
+        {
+          "author": "SYSTEM",
+          "text": "Elena Kuznetsova took the dialog",
+          "minutesAgo": 110
+        },
+        {
+          "author": "OPERATOR",
+          "kind": "voice",
+          "voice": {
+            "file": "elena-start-with-numbers.ogg",
+            "contentType": "audio/ogg",
+            "durationSeconds": 7,
+            "transcriptStatus": "NONE"
+          },
+          "minutesAgo": 108,
+          "authorUser": "elena"
+        },
+        {
+          "author": "CONTACT",
+          "kind": "voice",
+          "voice": {
+            "file": "olga-saturday-post.ogg",
+            "contentType": "audio/ogg",
+            "durationSeconds": 3,
+            "transcriptStatus": "READY",
+            "transcript": "Does the post office deliver parcels on Saturdays?"
+          },
+          "minutesAgo": 105
+        }
+      ]
+    },
+    {
+      "key": "sergey_address",
+      "agent": "consultant",
+      "connection": "tg",
+      "contact": "sergey",
+      "identity": "sergey_tg",
+      "externalChatId": "482913007",
+      "lifecycle": "CLOSED",
+      "controlMode": "HUMAN",
+      "expectedResponder": "NOBODY",
+      "assignedOperator": "elena",
+      "group": "operators",
+      "priority": "NONE",
+      "labels": [
+        "address"
+      ],
+      "note": "",
+      "createdHoursAgo": 30,
+      "createdMinutesAgo": 9,
+      "lastActivityHoursAgo": 30,
+      "lastActivityMinutesAgo": 2,
+      "readBy": [
+        "elena"
+      ],
+      "messages": [
+        {
+          "author": "CONTACT",
+          "text": "Hello, I would like to change the delivery address on order 4402",
+          "hoursAgo": 30,
+          "minutesAgo": 9
+        },
+        {
+          "author": "SYSTEM",
+          "text": "Elena Kuznetsova took the dialog",
+          "hoursAgo": 30,
+          "minutesAgo": 8
+        },
+        {
+          "author": "OPERATOR",
+          "authorUser": "elena",
+          "text": "Hello, Sergey. Send me the new address and I will change it.",
+          "hoursAgo": 30,
+          "minutesAgo": 7
+        },
+        {
+          "author": "CONTACT",
+          "text": "12 Deansgate, Flat 40, Manchester",
+          "hoursAgo": 30,
+          "minutesAgo": 5
+        },
+        {
+          "author": "OPERATOR",
+          "authorUser": "elena",
+          "text": "Done, the address is updated. Have a good day!",
+          "hoursAgo": 30,
+          "minutesAgo": 3
+        },
+        {
+          "author": "SYSTEM",
+          "text": "Dialog closed",
+          "hoursAgo": 30,
+          "minutesAgo": 2
+        }
+      ]
+    },
+    {
+      "key": "maria_measure",
+      "agent": "consultant",
+      "connection": "tg",
+      "contact": "maria",
+      "identity": "maria_tg",
+      "externalChatId": "482913001",
+      "lifecycle": "CLOSED",
+      "controlMode": "HUMAN",
+      "expectedResponder": "NOBODY",
+      "assignedOperator": "anna",
+      "group": "operators",
+      "priority": "NONE",
+      "labels": [],
+      "note": "",
+      "archivedDaysAgo": 20,
+      "createdDaysAgo": 24,
+      "lastActivityDaysAgo": 24,
+      "readBy": [
+        "anna"
+      ],
+      "previousConversation": "maria_first",
+      "messages": [
+        {
+          "author": "CONTACT",
+          "text": "Hello! Three windows, 2.4 by 2.7 each. How much would a set of curtains with voile cost?",
+          "daysAgo": 24,
+          "hoursAgo": 3
+        },
+        {
+          "author": "SYSTEM",
+          "text": "Anna Kim took the dialog",
+          "daysAgo": 24,
+          "hoursAgo": 3
+        },
+        {
+          "author": "OPERATOR",
+          "authorUser": "anna",
+          "text": "Hello, Maria! Anna Kim here. For three windows at 2.4 × 2.7: Nord blackout curtains and sheer voile — £1,940 including the making. I am sending the quote as a file.",
+          "daysAgo": 24,
+          "hoursAgo": 2
+        },
+        {
+          "author": "CONTACT",
+          "text": "That works! Go ahead, I will pay today.",
+          "daysAgo": 24,
+          "hoursAgo": 1
+        },
+        {
+          "author": "OPERATOR",
+          "authorUser": "anna",
+          "text": "I have placed order 4471. The payment link will come to this chat. Thank you!",
+          "daysAgo": 24,
+          "hoursAgo": 1
+        },
+        {
+          "author": "SYSTEM",
+          "text": "Dialog closed · handled by Anna Kim",
+          "daysAgo": 24
+        }
+      ]
+    },
+    {
+      "key": "maria_first",
+      "agent": "consultant",
+      "connection": "tg",
+      "contact": "maria",
+      "identity": "maria_tg",
+      "externalChatId": "482913001",
+      "lifecycle": "CLOSED",
+      "controlMode": "AI",
+      "expectedResponder": "NOBODY",
+      "group": "operators",
+      "priority": "NONE",
+      "labels": [],
+      "note": "",
+      "archivedDaysAgo": 30,
+      "createdDaysAgo": 33,
+      "lastActivityDaysAgo": 33,
+      "readBy": [
+        "anna"
+      ],
+      "messages": [
+        {
+          "author": "CONTACT",
+          "text": "Hello, which fabrics do you have for a living room and how long does the making take?",
+          "daysAgo": 33,
+          "hoursAgo": 5
+        },
+        {
+          "author": "AI",
+          "text": "Hello, Maria! For a living room people usually take Nord blackout (14 colours) and Scandia linen. Making takes 5–7 working days after payment. I am sending the fabric catalogue.",
+          "daysAgo": 33,
+          "hoursAgo": 5
+        },
+        {
+          "author": "CONTACT",
+          "text": "Thank you, I will have a look!",
+          "daysAgo": 33,
+          "hoursAgo": 4
+        },
+        {
+          "author": "SYSTEM",
+          "text": "Dialog closed · AI",
+          "daysAgo": 33
+        }
+      ]
+    },
+    {
+      "key": "viktor_wholesale",
+      "agent": "consultant",
+      "connection": "tg",
+      "contact": "viktor",
+      "identity": "viktor_tg",
+      "externalChatId": "482913006",
+      "lifecycle": "OPEN",
+      "controlMode": "HUMAN",
+      "expectedResponder": "CUSTOMER",
+      "assignedOperator": "kirill",
+      "group": "vip",
+      "priority": "LOW",
+      "labels": [
+        "vip",
+        "wholesale"
+      ],
+      "note": "Textile buyer for a hotel. Asked us to write by e-mail rather than call.",
+      "createdMinutesAgo": 4300,
+      "lastActivityMinutesAgo": 2900,
+      "readBy": [
+        "kirill",
+        "elena"
+      ],
+      "messages": [
+        {
+          "author": "CONTACT",
+          "text": "Good afternoon. House of Textiles, a 46-room hotel. We need blackout and voile for every window, all one size, 1.8 × 2.5. Do you have wholesale terms?",
+          "daysAgo": 3
+        },
+        {
+          "author": "AI",
+          "text": "Good afternoon, Viktor! Wholesale terms are handled by our VIP client manager — I am passing the dialog on.",
+          "daysAgo": 3
+        },
+        {
+          "author": "SYSTEM",
+          "text": "Kirill Volkov took the dialog",
+          "daysAgo": 3
+        },
+        {
+          "author": "OPERATOR",
+          "authorUser": "kirill",
+          "text": "Hello, Viktor! Kirill Volkov here. On 46 sets we give 12% off the fabric and the making, with a three-week lead time. I will send the quotation by e-mail today.",
+          "daysAgo": 3
+        },
+        {
+          "author": "CONTACT",
+          "text": "Excellent, I will wait for the quotation. My e-mail is on the card.",
+          "daysAgo": 2
+        },
+        {
+          "author": "CONTACT",
+          "kind": "contact",
+          "text": "+44 20 7946 0210",
+          "daysAgo": 2
+        }
+      ],
+      "archivedDaysAgo": 1,
+      "createdDaysAgo": 3,
+      "lastActivityDaysAgo": 2
+    },
+    {
+      "key": "polina_password",
+      "agent": "support",
+      "connection": "email",
+      "contact": "polina",
+      "identity": "polina_email",
+      "externalChatId": "polina.rakitina@example.com",
+      "lifecycle": "CLOSED",
+      "controlMode": "HUMAN",
+      "expectedResponder": "NOBODY",
+      "group": "support",
+      "priority": "MEDIUM",
+      "labels": [],
+      "note": "",
+      "createdMinutesAgo": 240,
+      "lastActivityMinutesAgo": 200,
+      "readBy": [
+        "igor"
+      ],
+      "transportMeta": {
+        "subject": "The password reset e-mail never arrives"
+      },
+      "messages": [
+        {
+          "author": "CONTACT",
+          "text": "The password reset e-mail for my account never arrives",
+          "contentHtml": "<p>Hello!</p><p>I am trying to reset the password for my account on <b>nord-atelier.com</b> — the e-mail has not arrived for an hour. The address is right, I have checked.</p><p>Kind regards,<br>Polina Rakitina</p>",
+          "minutesAgo": 240,
+          "daysAgo": 2
+        },
+        {
+          "author": "AI",
+          "text": "Please check your spam folder. If it is not there, I will pass the request to a member of staff.",
+          "contentHtml": "<p>Hello, Polina!</p><p>The message comes from <b>no-reply@nord-atelier.com</b> within 5 minutes. Please check your spam folder. If it is not there, I will pass the request to a member of staff.</p>",
+          "minutesAgo": 238,
+          "daysAgo": 2
+        },
+        {
+          "author": "CONTACT",
+          "text": "It is not in spam either. Please help.",
+          "contentHtml": "<p>It is not in spam either. Please help.</p>",
+          "minutesAgo": 200,
+          "daysAgo": 2
+        },
+        {
+          "author": "SYSTEM",
+          "text": "The AI handed the dialog over: the client is asking for a member of staff",
+          "minutesAgo": 200,
+          "daysAgo": 2
+        },
+        {
+          "author": "OPERATOR",
+          "authorUser": "igor",
+          "text": "Hello, Polina! Igor Saveliev here. The messages were going to an address with a typo — I have fixed it and sent the reset link again.",
+          "daysAgo": 2,
+          "contentHtml": "<p>Hello, Polina!</p><p>The messages were going to an address with a typo — I have fixed it and sent the reset link again.</p><p>Igor Saveliev, support</p>"
+        },
+        {
+          "author": "SYSTEM",
+          "text": "Dialog closed · handled by Igor Saveliev",
+          "daysAgo": 2
+        },
+        {
+          "author": "OPERATOR",
+          "authorUser": "igor",
+          "text": "Hello, Polina! Igor Saveliev here. The messages were going to an address with a typo — I have fixed it and sent the reset link again.",
+          "daysAgo": 2,
+          "contentHtml": "<p>Hello, Polina!</p><p>The messages were going to an address with a typo — I have fixed it and sent the reset link again.</p><p>Igor Saveliev, support</p>"
+        },
+        {
+          "author": "SYSTEM",
+          "text": "Dialog closed · handled by Igor Saveliev",
+          "daysAgo": 2
+        },
+        {
+          "author": "OPERATOR",
+          "authorUser": "igor",
+          "text": "Hello, Polina! Igor Saveliev here. The messages were going to an address with a typo — I have fixed it and sent the reset link again.",
+          "daysAgo": 2,
+          "contentHtml": "<p>Hello, Polina!</p><p>The messages were going to an address with a typo — I have fixed it and sent the reset link again.</p><p>Igor Saveliev, support</p>"
+        },
+        {
+          "author": "SYSTEM",
+          "text": "Dialog closed · handled by Igor Saveliev",
+          "daysAgo": 2
+        }
+      ],
+      "archivedDaysAgo": 1,
+      "createdDaysAgo": 2,
+      "lastActivityDaysAgo": 2,
+      "assignedOperator": "igor"
+    },
+    {
+      "key": "portal_sergey",
+      "agent": "portal",
+      "connection": "web_account",
+      "contact": "sergey",
+      "identity": "sergey_web",
+      "externalChatId": "portal-sergey-1",
+      "lifecycle": "CLOSED",
+      "controlMode": "HUMAN",
+      "expectedResponder": "NOBODY",
+      "assignedOperator": "igor",
+      "group": "support",
+      "priority": "NONE",
+      "labels": [],
+      "note": "An authenticated request from the customer account (support portal).",
+      "createdDaysAgo": 6,
+      "lastActivityDaysAgo": 6,
+      "readBy": [
+        "artem"
+      ],
+      "messages": [
+        {
+          "author": "CONTACT",
+          "text": "I paid for order 4402 by bank transfer, but the status still says “Awaiting payment”. I am attaching the receipt.",
+          "daysAgo": 6
+        },
+        {
+          "author": "AI",
+          "text": "Hello, Sergey. A bank transfer can take up to 30 minutes to show. If the status does not change, I will pass this to a member of staff.",
+          "daysAgo": 6
+        },
+        {
+          "author": "SYSTEM",
+          "text": "Igor Saveliev took the dialog",
+          "daysAgo": 6
+        },
+        {
+          "author": "OPERATOR",
+          "authorUser": "igor",
+          "text": "Sergey, I found the payment and applied it by hand — order 4402 is now “In production”. Thank you for your patience!",
+          "daysAgo": 6
+        },
+        {
+          "author": "SYSTEM",
+          "text": "Dialog closed · handled by Igor Saveliev",
+          "daysAgo": 6
+        }
+      ],
+      "archivedDaysAgo": 4
+    },
+    {
+      "key": "spam_credit",
+      "agent": "consultant",
+      "connection": "tg",
+      "contact": "spammer",
+      "identity": "spam_tg",
+      "externalChatId": "900000001",
+      "lifecycle": "SPAM",
+      "controlMode": "PAUSED",
+      "expectedResponder": "NOBODY",
+      "group": "operators",
+      "priority": "NONE",
+      "labels": [],
+      "note": "",
+      "createdMinutesAgo": 600,
+      "lastActivityMinutesAgo": 600,
+      "readBy": [
+        "elena"
+      ],
+      "messages": [
+        {
+          "author": "CONTACT",
+          "text": "GREAT BUSINESS LOANS up to £200,000 with no paperwork! Click: credit-fast24.example",
+          "minutesAgo": 600
+        },
+        {
+          "author": "SYSTEM",
+          "text": "Elena Kuznetsova marked the dialog as spam",
+          "minutesAgo": 590
+        }
+      ]
+    }
+  ],
+  "contactMerges": [
+    {
+      "target": "maria",
+      "source": "maria-duplicate",
+      "reason": "The same person: the phone number matched and it was confirmed in the dialog",
+      "actor": "elena"
+    }
+  ]
+}
@@ -0,0 +1,161 @@
+{
+  "schemaVersion": 1,
+  "calls": [
+    {
+      "key": "call_maria",
+      "conversation": "maria_measure",
+      "initiatedBy": "anna",
+      "contactIdentity": "maria_tg",
+      "deliveryConnection": "tg",
+      "kind": "AUDIO",
+      "status": "ENDED",
+      "endedBy": "STAFF",
+      "daysAgo": 24,
+      "durationSeconds": 262,
+      "metrics": {
+        "connectionType": "RELAY",
+        "localCandidateType": "relay",
+        "remoteCandidateType": "relay",
+        "roundTripMs": 64
+      }
+    },
+    {
+      "key": "call_olga_video",
+      "conversation": "olga_return",
+      "initiatedBy": "elena",
+      "contactIdentity": "olga_tg",
+      "deliveryConnection": "tg",
+      "kind": "VIDEO",
+      "status": "ENDED",
+      "endedBy": "CUSTOMER",
+      "minutesAgo": 107,
+      "durationSeconds": 95,
+      "metrics": {
+        "connectionType": "DIRECT",
+        "localCandidateType": "srflx",
+        "remoteCandidateType": "srflx",
+        "roundTripMs": 31
+      }
+    },
+    {
+      "key": "call_sergey_missed",
+      "conversation": "sergey_address",
+      "initiatedBy": "elena",
+      "contactIdentity": "sergey_tg",
+      "deliveryConnection": "tg",
+      "kind": "AUDIO",
+      "status": "MISSED",
+      "hoursAgo": 30,
+      "minutesAgo": 6
+    },
+    {
+      "key": "call_viktor_declined",
+      "conversation": "viktor_wholesale",
+      "initiatedBy": "kirill",
+      "contactIdentity": "viktor_tg",
+      "deliveryConnection": "tg",
+      "kind": "AUDIO",
+      "status": "DECLINED",
+      "endedBy": "CUSTOMER",
+      "daysAgo": 3
+    },
+    {
+      "key": "call_sergey_expired",
+      "conversation": "portal_sergey",
+      "initiatedBy": "igor",
+      "contactIdentity": "sergey_web",
+      "deliveryConnection": "web_account",
+      "kind": "AUDIO",
+      "status": "EXPIRED",
+      "daysAgo": 6,
+      "invite": {
+        "deliveryStatus": "DELIVERED",
+        "expiredMinutesAfter": 2
+      }
+    }
+  ],
+  "notifications": [
+    {
+      "type": "DIALOG_WAITING",
+      "level": "WARNING",
+      "title": "Dmitry Orlov is waiting for an operator",
+      "body": "Web Chat: the client asked for a member of staff. Waiting 6 min.",
+      "targetRoute": "chat",
+      "targetConversation": "dmitry_custom",
+      "audience": "ALL",
+      "minutesAgo": 10
+    },
+    {
+      "type": "DIALOG_NEW_MESSAGE",
+      "level": "INFO",
+      "title": "New voice message from Olga Melnik",
+      "body": "“Does the post office deliver parcels on Saturdays?”",
+      "targetRoute": "chat",
+      "targetConversation": "olga_return",
+      "audience": "USER",
+      "recipientUser": "elena",
+      "minutesAgo": 105
+    },
+    {
+      "type": "DIALOG_NEW_MESSAGE",
+      "level": "INFO",
+      "title": "New message from Maria Sokolova",
+      "body": "“All right, I'll wait”",
+      "targetRoute": "chat",
+      "targetConversation": "maria_delivery",
+      "audience": "ALL",
+      "minutesAgo": 4
+    },
+    {
+      "type": "INTEGRATION_ERROR",
+      "level": "CRITICAL",
+      "title": "Telegram · delivery bot: connection error",
+      "body": "401 Unauthorized: bot token was revoked in @BotFather. Check the token in the connection settings.",
+      "targetRoute": "settings",
+      "audience": "OWNER",
+      "minutesAgo": 4200
+    },
+    {
+      "type": "RELEASE_PUBLISHED",
+      "level": "SUCCESS",
+      "title": "Chatballs update: voice messages",
+      "body": "Operators can send voice messages to Telegram and MAX, and incoming ones are transcribed with a single button.",
+      "targetRoute": "chat",
+      "audience": "ALL",
+      "daysAgo": 2,
+      "readBy": [
+        "elena",
+        "anna",
+        "svetlana"
+      ]
+    }
+  ],
+  "messengerBindings": [
+    {
+      "user": "elena",
+      "connection": "tg",
+      "externalChatId": "482900010",
+      "pushTypes": [
+        "DIALOG_WAITING",
+        "DIALOG_NEW_MESSAGE",
+        "INTEGRATION_ERROR"
+      ]
+    },
+    {
+      "user": "svetlana",
+      "connection": "tg",
+      "externalChatId": "482900011",
+      "pushTypes": [
+        "DIALOG_WAITING"
+      ]
+    }
+  ],
+  "messengerBindingCodes": [
+    {
+      "user": "igor",
+      "connection": "tg",
+      "code": "DEMO-7K2P",
+      "expiresInMinutes": 25
+    }
+  ]
+}
@@ -0,0 +1,134 @@
+{
+  "schemaVersion": 1,
+  "_comment": "English demo set for «Nord Atelier». Same cast and keys as data/ru: avatars, voice recordings and cross-file references are shared, only the prose differs. Installed into the installer's own organization — neither the organization nor its owner is created here. All demo employees share one password, see demoPassword.",
+  "demoPassword": "Chatballs-Demo-2026",
+  "showcaseAccounts": [
+    "elena",
+    "svetlana",
+    "igor"
+  ],
+  "groups": [
+    {
+      "key": "operators",
+      "name": "Operators",
+      "color": "#1677ff"
+    },
+    {
+      "key": "support",
+      "name": "Support",
+      "color": "#2aa876"
+    },
+    {
+      "key": "vip",
+      "name": "VIP clients",
+      "color": "#eb2f96"
+    }
+  ],
+  "accounts": [
+    {
+      "key": "elena",
+      "email": "e.kuznetsova@nord-atelier.com",
+      "fullName": "Elena Kuznetsova",
+      "role": "ADMIN",
+      "positionTitle": "Administrator",
+      "phone": "+44 20 7946 0116",
+      "groups": [
+        "operators",
+        "support"
+      ],
+      "avatar": "elena-kuznetsova.png",
+      "uiTheme": "LIGHT",
+      "uiAccent": "#1677ff",
+      "createdDaysAgo": 120
+    },
+    {
+      "key": "anna",
+      "email": "a.kim@nord-atelier.com",
+      "fullName": "Anna Kim",
+      "role": "ADMIN",
+      "positionTitle": "Administrator",
+      "phone": "+44 20 7946 0117",
+      "groups": [
+        "operators",
+        "support"
+      ],
+      "avatar": "anna-kim.png",
+      "uiTheme": "LIGHT",
+      "uiAccent": "#1677ff",
+      "createdDaysAgo": 110
+    },
+    {
+      "key": "svetlana",
+      "email": "s.petrova@nord-atelier.com",
+      "fullName": "Svetlana Petrova",
+      "role": "EMPLOYEE",
+      "positionTitle": "Operator",
+      "phone": "+44 20 7946 0120",
+      "groups": [
+        "operators"
+      ],
+      "avatar": "svetlana-petrova.jpg",
+      "uiTheme": "DARK",
+      "uiAccent": "#7c3aed",
+      "createdDaysAgo": 80
+    },
+    {
+      "key": "igor",
+      "email": "i.saveliev@nord-atelier.com",
+      "fullName": "Igor Saveliev",
+      "role": "EMPLOYEE",
+      "positionTitle": "Support specialist",
+      "phone": "+44 20 7946 0119",
+      "groups": [
+        "support"
+      ],
+      "uiTheme": "SYSTEM",
+      "uiAccent": "#0f9d58",
+      "createdDaysAgo": 60
+    },
+    {
+      "key": "kirill",
+      "email": "k.volkov@nord-atelier.com",
+      "fullName": "Kirill Volkov",
+      "role": "EMPLOYEE",
+      "positionTitle": "VIP client manager",
+      "phone": "",
+      "groups": [
+        "vip"
+      ],
+      "totpEnabled": true,
+      "uiTheme": "LIGHT",
+      "uiAccent": "#d6336c",
+      "createdDaysAgo": 40
+    },
+    {
+      "key": "natalia",
+      "email": "n.frolova@nord-atelier.com",
+      "fullName": "Natalia Frolova",
+      "role": "EMPLOYEE",
+      "positionTitle": "Operator (left the company)",
+      "phone": "",
+      "groups": [
+        "operators"
+      ],
+      "blocked": true,
+      "uiTheme": "SYSTEM",
+      "uiAccent": "#1677ff",
+      "createdDaysAgo": 200
+    }
+  ],
+  "invitations": [
+    {
+      "email": "v.kotova@nord-atelier.com",
+      "role": "EMPLOYEE",
+      "createdBy": "elena",
+      "expiresInDays": 6
+    },
+    {
+      "email": "old.invite@nord-atelier.com",
+      "role": "EMPLOYEE",
+      "createdBy": "elena",
+      "expiresInDays": -2
+    }
+  ]
+}
@@ -0,0 +1,122 @@
+{
+  "schemaVersion": 1,
+  "portal": {
+    "slug": "nord-atelier",
+    "name": "Help · Nord Atelier",
+    "locale": "en",
+    "status": "PUBLISHED",
+    "widgetConnection": "web_help",
+    "categories": [
+      {
+        "slug": "orders",
+        "name": "Orders and payment",
+        "description": "Placing an order, payment, statuses",
+        "sortOrder": 1
+      },
+      {
+        "slug": "delivery",
+        "name": "Delivery",
+        "description": "Lead times, courier, nationwide shipping",
+        "sortOrder": 2
+      },
+      {
+        "slug": "returns",
+        "name": "Returns and exchanges",
+        "description": "Return conditions for our products",
+        "sortOrder": 3
+      },
+      {
+        "slug": "care",
+        "name": "Caring for your curtains",
+        "description": "Washing and ironing by fabric type",
+        "sortOrder": 4
+      }
+    ],
+    "articles": [
+      {
+        "slug": "how-to-measure",
+        "category": "orders",
+        "title": "How to measure for curtains",
+        "summary": "Track, drop, allowances — in five minutes",
+        "content": "## Track length\n\nMeasure the track from end to end — not the window. Curtains should cover the window with 15–20 cm to spare on each side.\n\n## Drop\n\nFrom the track hook (or the top of the pole) to the length you want: to the sill minus 1 cm, to the floor minus 1–2 cm, puddled on the floor plus 3–5 cm.\n\n## Eyelets\n\nFor eyelet curtains add 3 cm at the top.\n\nPhotograph the whole window and send it to a consultant — we will check your figures free of charge.",
+        "status": "PUBLISHED",
+        "helpfulVotes": 14,
+        "unhelpfulVotes": 1,
+        "publishedDaysAgo": 27,
+        "files": [
+          "katalog-tkanej-2026.pdf"
+        ]
+      },
+      {
+        "slug": "lead-times",
+        "category": "delivery",
+        "title": "Making and delivery times",
+        "summary": "5–7 working days to make, 3–5 to deliver nationwide",
+        "content": "Making takes **5–7 working days** once the quote is agreed and paid.\n\n### Within London\n\nCourier — £15, free on orders over £400. Slots 10:00–13:00, 13:00–17:00, 17:00–20:00. The courier calls an hour ahead.\n\n### Across the country\n\nDPD to a pickup point or to your door, 3–5 working days. The tracking number arrives by e-mail on the day of dispatch.",
+        "status": "PUBLISHED",
+        "helpfulVotes": 22,
+        "unhelpfulVotes": 3,
+        "publishedDaysAgo": 26,
+        "secondRevision": {
+          "summary": "5–7 working days to make, 3–5 to deliver nationwide. Moving your slot is free",
+          "contentAppend": "\n\n### Moving your delivery\n\nYou can move the slot free of charge until 18:00 the day before — write to us in the chat or at info@nord-atelier.com.",
+          "daysAgo": 9
+        }
+      },
+      {
+        "slug": "returns-and-exchanges",
+        "category": "returns",
+        "title": "Returns and exchanges",
+        "summary": "Ready-made items — 14 days; made to measure — remade if faulty",
+        "content": "Ready-made items from the catalogue can be returned within **14 days** if they have not been used.\n\nItems made to your own measurements cannot be returned (bespoke goods are exempt from the cancellation right under the Consumer Contracts Regulations), except where they are faulty or do not match the order: wrong colour or size, defects in the making. In that case we remake or exchange them free of charge, in 5–7 working days.\n\nTo make a claim, send us your order number and photographs of the item in the chat.",
+        "status": "PUBLISHED",
+        "helpfulVotes": 9,
+        "unhelpfulVotes": 4,
+        "publishedDaysAgo": 25
+      },
+      {
+        "slug": "your-account",
+        "category": "orders",
+        "title": "Your account: signing in and resetting a password",
+        "summary": "The reset e-mail arrives within 5 minutes",
+        "content": "You sign in with your e-mail. The password reset message comes from no-reply@nord-atelier.com within 5 minutes. If it has not arrived, check your spam folder. You can ask for another one after 10 minutes.\n\nOrder statuses: “Awaiting payment” → “In production” → “Ready” → “Handed to the courier” → “Delivered”.",
+        "status": "PUBLISHED",
+        "helpfulVotes": 6,
+        "unhelpfulVotes": 0,
+        "publishedDaysAgo": 20
+      },
+      {
+        "slug": "curtain-care",
+        "category": "care",
+        "title": "How to care for your curtains",
+        "summary": "Washing and ironing by fabric type",
+        "content": "**Blackout** — delicate wash at 30°, no spin, iron on the reverse at the lowest setting.\n\n**Linen** — wash at 40°; shrinkage of up to 3% is already allowed for in the measurements.\n\n**Velvet** — dry clean only.\n\n**Voile** — wash at 30° in a mesh bag, dry it hanging on the track.",
+        "status": "PUBLISHED",
+        "helpfulVotes": 11,
+        "unhelpfulVotes": 0,
+        "publishedDaysAgo": 15
+      },
+      {
+        "slug": "paying-in-instalments",
+        "category": "orders",
+        "title": "Paying in instalments",
+        "summary": "Draft: 50/50 terms for orders over £1,200",
+        "content": "For orders over £1,200 you can pay 50% when you order and 50% before dispatch. Draft — to be agreed with the finance team.",
+        "status": "DRAFT",
+        "helpfulVotes": 0,
+        "unhelpfulVotes": 0
+      },
+      {
+        "slug": "summer-sale-2026",
+        "category": "orders",
+        "title": "Summer sale 2026",
+        "summary": "10% off voile until 31 August",
+        "content": "This offer has ended.",
+        "status": "ARCHIVED",
+        "helpfulVotes": 3,
+        "unhelpfulVotes": 0,
+        "publishedDaysAgo": 70
+      }
+    ]
+  }
+}
@@ -0,0 +1,13 @@
+DELIVERY AND PAYMENT — consultant's crib sheet
+
+Making: 5–7 working days after payment. Express (3 days): +30% on the making, fabric in stock only.
+
+London, courier: £15, free over £400.
+Slots: 10:00–13:00, 13:00–17:00, 17:00–20:00. The courier calls an hour ahead.
+Moving a slot is free until 18:00 the day before.
+
+Nationwide, DPD: to a pickup point or to your door, 3–5 working days from dispatch.
+The tracking number goes to the client's e-mail on the day of dispatch, by 19:00.
+Manchester, Birmingham, Leeds — usually 3 days.
+
+Payment: 100% on ordering (card, bank transfer) or 50/50 for orders over £1,200.
@@ -0,0 +1,32 @@
+%PDF-1.4
+1 0 obj
+<< /Type /Catalog /Pages 2 0 R >>
+endobj
+2 0 obj
+<< /Type /Pages /Kids [3 0 R] /Count 1 >>
+endobj
+3 0 obj
+<< /Type /Page /Parent 2 0 R /MediaBox [0 0 595 842] /Contents 4 0 R /Resources << /Font << /F1 5 0 R >> >> >>
+endobj
+4 0 obj
+<< /Length 496 >>
+stream
+BT /F1 12 Tf 50 780 Td 16 TL (Nord Atelier - Fabric catalogue 2026) Tj T* () Tj T* (Curtain fabrics, width 280-300 cm) Tj T* (Nord blackout - 100% blackout - GBP 59/m - 14 colours) Tj T* (Linen blend - GBP 35/m - 9 colours) Tj T* (Verona velvet - GBP 87/m - 6 colours) Tj T* (Canvas - GBP 27/m - 12 colours) Tj T* () Tj T* (Voile) Tj T* (Sheer voile - GBP 15/m) Tj T* (Greek net - GBP 20/m) Tj T* (Linen voile - GBP 29/m) Tj T* () Tj T* (Samples: up to 5 of them, posted free of charge.) Tj T* ET
+endstream
+endobj
+5 0 obj
+<< /Type /Font /Subtype /Type1 /BaseFont /Helvetica >>
+endobj
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+<< /Size 6 /Root 1 0 R >>
+startxref
+858
+%%EOF
@@ -0,0 +1,14 @@
+Fabric catalogue 2026 — Nord Atelier
+
+Curtain fabrics (280–300 cm wide)
+Nord blackout — 100% blackout — £59/m — 14 colours
+Linen blend — £35/m — 9 colours
+Verona velvet — £87/m — 6 colours
+Canvas — £27/m — 12 colours
+
+Voile
+Sheer voile — £15/m
+Greek net — £20/m
+Linen voile — £29/m
+
+Samples: up to 5 of them, posted free of charge.
@@ -0,0 +1,32 @@
+# Quoting for made-to-measure curtains
+
+## The formula
+
+**Price = fabric + making + hardware**
+
+| Component | How we count it |
+| --- | --- |
+| Fabric | metres × price per metre (see the fabric catalogue) |
+| Making, curtains | £18 per linear metre of finished width |
+| Making, voile | £14 per linear metre of finished width |
+| Eyelets | £3.50 each (18 cm apart) |
+| Heading tape | £4.80 per metre |
+
+## Fullness ratio
+
+- Heavy curtains — 1.5
+- Linen, canvas — 1.8
+- Voile, sheers — 2.0–2.5
+
+Fabric width = track width × ratio. Fabric drop = finished drop + 15 cm for the hem.
+
+## Worked example
+
+A 3 m track, 2.6 m drop, Nord blackout at £59/m, two curtains.
+
+- Fabric: 3 × 1.5 = 4.5 m × £59 = £265.50
+- Making: 4.5 × £18 = £81
+- Tape: 4.5 × £4.80 = £21.60
+- **Total: £368.10**
+
+Minimum order — £120. Measuring within London is free on orders over £600.
@@ -28,7 +28,7 @@ from chatballs.webchat.widgets import ensure_widget


 def load(context: TenantContext, refs: DemoRefs) -> None:
-    data = manifest.load("channels_ai")
+    data = manifest.load("channels_ai", refs.language)
    current = now()

    llm = _ensure_llm_provider(context, refs, data["llmProvider"], current)
Author	SHA1	Message	Date
AndreyandClaude Opus 5	5bf3d9b572	🔖 release: 1.2.1 Тег на зелёном коммите: в v1.2.0 проверки CI упали на порядке импортов. Кода релиз не меняет — правка уже в main отдельным коммитом. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-09-12 03:36:56 +03:00
AndreyandClaude Opus 5	6d94aa1f9f	🚨 fix(lint): порядок импортов по конфигурации из корня репозитория Проверка ruff в контейнере шла из /app/apps/backend, где корневого pyproject.toml нет, — правило I (сортировка импортов) там просто не применялось, и CI поймал то, что локальный прогон пропустил. Правки чисто механические: порядок импортов и пустые строки, оставшиеся от удалённых констант. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-09-12 03:20:50 +03:00
AndreyandClaude Opus 5	0e6a3db9a6	🌐 feat(i18n): язык ответов агента, английское демо и язык в мастере Язык ответов агента. Поле AIAgent.answer_language: «как у клиента» (по умолчанию), «язык организации» или конкретный язык. Системный промпт при этом не переводится — его читает модель, а не человек; язык задаёт отдельная директива, потому что русский промпт сам по себе тянет ответ в русский язык. База знаний остаётся одноязычной: поиск ведёт семантическая ветка, а эмбеддинги кроссязычные. Язык уходящего наружу текста. Приглашение на звонок, просьба поделиться контактом, подписи кнопок мессенджеров, тема письма, приветствие виджета и ответы бота уведомлений берут язык организации (i18n.customer_language), а не язык запроса: клиент не должен получать письмо на языке того сотрудника, кто нажал кнопку, и половина такого текста рождается в воркере, где запроса нет. Английское демо. Манифесты разложены по demo_seed/data/<язык>/, набор выбирается языком организации. Английский набор повторяет русский по составу — тот же каст, те же тринадцать диалогов, — переводился только текст. Свои документы знаний и каталог тканей; аватары и голосовые общие. Демо-провайдер стал двуязычным: наборы стоп-слов и ключевых слов на оба языка, язык определяется по письму клиента. Выбор языка в мастере первого запуска. Переключатель меняет экран без перезагрузки: форму уже заполняют, а пароль в хранилище браузера класть нельзя. Выбранный язык становится языком установки, и на нём же идёт вся установка — должность владельца, демо-данные, ошибки формы. Попутно исправлено: - Демо-стенд нельзя было редактировать. configure_agent_provider принимал только OpenRouter и Custom, а демо ставит агентов на встроенный DEMO. providerIntegrationId уходит с каждым PATCH карточки, поэтому падало любое сохранение агента — даже правка инструкций. - Список типов уведомлений отдавал ярлык TextChoices — захардкоженную русскую строку. Ярлык переехал ключом в реестр TYPE_META. - Результат «Проверить» у подключений (20 строк) и ошибки политики исходящих адресов уходили владельцу по-русски. - Правило data/ в .gitignore ловило demo_seed/data: русские манифесты лежали в индексе с прежних времён, а новые файлы туда молча не попадали бы. Каталог бэкенда — 519 ключей, наборы ru и en совпадают. Полный прогон бэкенда: 759 passed, 1 skipped. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-09-12 03:12:18 +03:00
AndreyandClaude Opus 5	d7f87719de	🔖 release: 1.1.0 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-09-10 00:37:21 +03:00
AndreyandClaude Opus 5	6c3dec7339	🌐 feat(i18n): язык интерфейса — русский и английский Интерфейс был русским в коде: строки лежали прямо в JSX и в ответах API, даты форматировались прибитым «ru-RU», склонение по числу писалось руками в каждом файле. Теперь текста в коде нет — он живёт в словарях, а язык выбирается человеком. Цепочка одна на обе стороны: профиль сотрудника → организация → установка → браузер. Пустое значение на каждом уровне значит «как выше», а не «русский»: тот, кто язык не трогал, поедет за организацией, когда владелец её переключит, а выбравший явно — останется на своём. Владелец задаёт язык организации («Настройки» → «Организация», рядом с часовым поясом) и язык установки («Платформа») — на нём открываются вход, сброс пароля и мастер первого запуска. Сотрудник переопределяет его в профиле. Русский каталог задаёт набор ключей, английский обязан его повторить: во фронтенде это ловит tsc — пропущенный перевод становится ошибкой сборки, — на бэкенде тест каталога, который заодно сверяет имена параметров в фразах. Формы множественного числа берутся из CLDR через Intl.PluralRules, даты и размеры — через Intl, а не через свои списки месяцев. Отдельно пришлось разобраться с тем, что уже записано в базу. Системные события диалога писались готовой русской фразой, и перевести историю задним числом нельзя — теперь пишется код события, а фразу собирает сервер на языке читателя. То же с уведомлениями: они адресованы операторам, а не одному человеку, и в смешанной команде готовая фраза неверна для половины. Тон системной строки в треде и признак анонимного посетителя больше не угадываются регуляркой по русским словам: под английским бэкендом это просто перестало бы работать. Письма уходят на языке получателя, а не отправителя: приглашение отправляет владелец, а читает другой человек. gettext не взят намеренно: .po/.mo потребовали бы msgfmt в сборке образа ради того же результата, что дают обычные словари, одинаковые на обеих сторонах. Язык запроса при этом активируется штатным механизмом Django, поэтому сообщения DRF переводятся тоже. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>	2026-09-10 00:36:52 +03:00
AndreyandClaude Fable 5.1	f91b3da27a	📄 docs(license): AGPL-3.0 Текст лицензии в LICENSE, раздел и бейдж в обоих README. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>	2026-09-09 19:52:11 +03:00
@@ -1 +1 @@
 .0.0
 .2.1