## What kind of change does this PR introduce?
Design system and validation consistency update.
## What is the current behaviour?
`KeyValueFieldArray` already renders per-cell form messages, but each
consumer still decides its own validation rules. At the moment, some
consumers allow partially filled rows to submit silently, while Log
Drains now treats them as inline validation errors.
## What is the new behaviour?
This PR standardises the recommended partial-row behaviour for the
current `KeyValueFieldArray` consumers by introducing a shared
validation helper and using it from each form schema.
- adds `getKeyValueFieldArrayValidationIssues` alongside
`KeyValueFieldArray`
- keeps `KeyValueFieldArray` presentation-only and leaves validation in
consumer schemas
- shows inline errors when one side of a key/value row is filled and the
other is empty
- keeps fully empty rows as draft rows
- keeps duplicate-key validation in Log Drains, where it already applies
- updates the design-system docs and examples to describe the validation
pattern explicitly
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Added reusable key/value validation utilities and public export; forms
now trim header/key/value inputs, show inline errors for partially
filled rows, and remove fully empty draft rows on submit.
* **Documentation**
* Clarified the field-array is rendering-only and added guidance for
placing validation in form schemas and handling draft rows.
* **Tests**
* Added unit and integration tests covering validation rules, duplicate
keys, trimming, draft-row stripping, and payload behavior.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
## What kind of change does this PR introduce?
Bug fix.
## What is the current behavior?
Webhook endpoint validation is inconsistent across Studio forms. The
webhook sheet accepts incomplete hostnames like `https://webhook`, event
type validation is not surfaced clearly, and HTTP endpoint validation
differs between webhooks, log drains, cron jobs, and database hooks.
## What is the new behavior?
- Tightens webhook endpoint URL validation and rejects incomplete
hostnames while still allowing localhost and IP-based endpoints.
- Surfaces the Event types validation through the standard form error
styling and highlights the existing accordion item border when invalid.
- **Extracts a shared HTTP endpoint URL validator and reuses it in
webhooks, log drains, cron jobs, and database hooks.**
- Adds focused regression tests for the webhook sheet and the
shared/consumer validation paths.
| After |
| --- |
| <img width="1728" height="997" alt="Webhooks Settings AWS Healthy
Toolshed Supabase-CB0D999C-D0BF-47AA-A10F-342A2E328DF9"
src="https://github.com/user-attachments/assets/bcbe4876-f9a7-497a-b288-460087a65546"
/> |
## To test
Form behaviour (in particular URL validation) on:
- Webhook endpoint
- Log drains
- Cron jobs
- Database hooks
Danny White