<img width="1693" height="1038" alt="image"
src="https://github.com/user-attachments/assets/9ef52446-c517-4ea9-ada6-ac6dc57c8af4"
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## Summary
- add an Explorer-specific chat toolbar with rename, chat ID,
permission, and branching controls
- list searchable non-support chats in Explorer with reactive updates
and safe rehydrated-date sorting
- add chat creation entry points to Explorer home and navigation menus
- route chat recent items correctly and show chat icons across shared
tab surfaces
- make the assistant sidebar expand action open the active chat in
Explorer
This is PR 3 of 3 and is stacked on #49031. Review #48973 first, then
#49031, then this PR. Compared with its base, this PR contains only
discovery, toolbar, and cross-surface integration work.
## To Test
- visit /explorer
- Create a new chat either via home tab chat input OR the chats sidebar
- Validate chats show up in sidebar
- Validate chat conversation works
- Close the chat tab and open a chat via sidebar
- Change permission settings via the chat tab toolbar and verify it
persists
## Test plan
- `mise exec node@22 -- pnpm --dir apps/studio exec tsc --noEmit`
- focused Vitest suite: 4 files / 5 tests covering reactive chat lists,
navigation filtering and sorting, recent-item routing, and sidebar
handoff
- ESLint on changed TypeScript files
- Prettier check on changed source files
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- **New Features**
- Added chat creation from the Explorer home, navigation, and new-tab
menu.
- Added an Explorer chat toolbar with editable names, ID copying,
permissions, shortcuts, and metadata warnings.
- Added searchable chat history with sorting, active-chat highlighting,
and clear empty states.
- Chats can now open directly in Explorer from the AI Assistant panel.
- Recent items now link correctly to chats and notebooks.
- **Bug Fixes**
- Improved chat list updates after creation, deletion, and restored
sessions.
- Added safer handling for chats without update timestamps.
- **Tests**
- Expanded coverage for chat navigation, creation, metadata warnings,
shortcuts, and recent-item links.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
---------
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
## Context
More groundwork for the Explorer - this PR initializes the Notebook
editor page which you can access with the "New notebook" CTA
As usual nothing functional just yet, but this PR also addresses some UI
functionality
- Creating more than 1 notebook will open multiple tabs (it wasn't
previously)
- Swapping between notebooks will update the URL (wasn't previously as
well)
Will probably start looking into the cells next, starting with
MarkdownCell followed by QueryCell
<img width="1390" height="894" alt="image"
src="https://github.com/user-attachments/assets/a467cdb4-f99f-43db-8106-c15c26c1bfbf"
/>
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
* **New Features**
* Added notebook creation actions from the Explorer home and navigation
areas.
* Introduced a full notebook editor with title editing, rename support,
and Analyze, Run, and Save controls.
* Added options to create query or Markdown cells in empty notebooks.
* Notebook tabs now open the corresponding notebook in the project
Explorer.
* **Bug Fixes**
* Improved Explorer layout sizing and notebook tab navigation behavior.
* Improved notebook tab labels and editing behavior, including
cancellation with Escape and submission with Enter or blur.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
## Context
Resolves FE-4074
Just adds scaffolding for the explorer UI - no data fetching yet.
Initializes the page + side nav, based off Saxon's POC in
`poc/explorer-prototype`
<img width="1389" height="500" alt="image"
src="https://github.com/user-attachments/assets/8f293992-97d9-403e-91d6-2e104cd20eb5"
/>
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
## New Features
- Added a project Explorer page accessible from
`/project/:ref/explorer`.
- Added navigation for browsing notebooks and chats.
- Added search fields, back navigation, animated transitions, and empty
states for Explorer sections.
- Added a conditional Explorer link to the SQL Editor menu when enabled.
## Documentation
- Marked the Explorer route migration as complete in the migration
checklist.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
