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

server/migrations/versions/0194f65cd6d3_add_webhook_fields_to_rooms.py

@@ -0,0 +1,36 @@
+"""Add webhook fields to rooms
+
+Revision ID: 0194f65cd6d3
+Revises: 5a8907fd1d78
+Create Date: 2025-08-27 09:03:19.610995
+
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision: str = "0194f65cd6d3"
+down_revision: Union[str, None] = "5a8907fd1d78"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table("room", schema=None) as batch_op:
+        batch_op.add_column(sa.Column("webhook_url", sa.String(), nullable=True))
+        batch_op.add_column(sa.Column("webhook_secret", sa.String(), nullable=True))
+
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table("room", schema=None) as batch_op:
+        batch_op.drop_column("webhook_secret")
+        batch_op.drop_column("webhook_url")
+
+    # ### end Alembic commands ###