feat(rooms): add webhook for transcript completion (#578)

* feat(rooms): add webhook notifications for transcript completion

- Add webhook_url and webhook_secret fields to rooms table
- Create Celery task with 24-hour retry window using exponential backoff
- Send transcript metadata, diarized text, topics, and summaries via webhook
- Add HMAC signature verification for webhook security
- Add test endpoint POST /v1/rooms/{room_id}/webhook/test
- Update frontend with webhook configuration UI and test button
- Auto-generate webhook secret if not provided
- Trigger webhook after successful file pipeline processing for room recordings

* style: linting

* fix: remove unwanted files

* fix: update openapi gen

* fix: self-review

* docs: add comprehensive webhook documentation

- Document webhook configuration, events, and payloads
- Include transcript.completed and test event examples
- Add security considerations and best practices
- Provide example webhook receiver implementation
- Document retry policy and signature verification

* fix: remove audio_mp3_url from webhook payload

- Remove audio download URL generation from webhook
- Update documentation to reflect the change
- Keep only frontend_url for accessing transcripts

* docs: remove unwanted section

* fix: correct API method name and type imports for rooms

- Fix v1RoomsRetrieve to v1RoomsGet
- Update Room type to RoomDetails throughout frontend
- Fix type imports in useRoomList, RoomList, RoomTable, and RoomCards

* feat: add show/hide toggle for webhook secret field

- Add eye icon button to reveal/hide webhook secret when editing
- Show password dots when webhook secret is hidden
- Reset visibility state when opening/closing dialog
- Only show toggle button when editing existing room with secret

* fix: resolve event loop conflict in webhook test endpoint

- Extract webhook test logic into shared async function
- Call async function directly from FastAPI endpoint
- Keep Celery task wrapper for background processing
- Fixes RuntimeError: event loop already running

* refactor: remove unnecessary Celery task for webhook testing

- Webhook testing is synchronous and provides immediate feedback
- No need for background processing via Celery
- Keep only the async function called directly from API endpoint

* feat: improve webhook test error messages and display

- Show HTTP status code in error messages
- Parse JSON error responses to extract meaningful messages
- Improved UI layout for webhook test results
- Added colored background for success/error states
- Better text wrapping for long error messages

* docs: adjust doc

* fix: review

* fix: update attempts to match close 24h

* fix: add event_id

* fix: changed to uuid, to have new event_id when reprocess.

* style: linting

* fix: alembic revision

www/app/(app)/rooms/useRoomList.tsx

@@ -1,11 +1,11 @@
 import { useEffect, useState } from "react";
 import { useError } from "../../(errors)/errorContext";
 import useApi from "../../lib/useApi";
-import { Page_Room_ } from "../../api";
+import { Page_RoomDetails_ } from "../../api";
 import { PaginationPage } from "../browse/_components/Pagination";
 
 type RoomList = {
-  response: Page_Room_ | null;
+  response: Page_RoomDetails_ | null;
   loading: boolean;
   error: Error | null;
   refetch: () => void;
@@ -13,7 +13,7 @@ type RoomList = {
 
 //always protected
 const useRoomList = (page: PaginationPage): RoomList => {
-  const [response, setResponse] = useState<Page_Room_ | null>(null);
+  const [response, setResponse] = useState<Page_RoomDetails_ | null>(null);
   const [loading, setLoading] = useState<boolean>(true);
   const [error, setErrorState] = useState<Error | null>(null);
   const { setError } = useError();