Notifications page:
- NC Talk section expanded: url, bot_secret, notification_room,
nc_username, nc_app_password — all fields from channels.json now editable
- Per-channel sections use <details>/<summary> collapsibles; auto-open
when values are present
- Secrets use type=password with "leave blank to keep" semantics
- Google Chat outbound webhook in its own collapsible section
Account settings:
- HTTP POST Allowlist section added (same textarea pattern as email allowlist)
- POST /settings/http-allowlist route saves home/{user}/http_allowlist.json
- Example placeholder shows ha.dgrzone.com and n8n patterns
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Adds GET /settings/notifications (dedicated page with channel form + two
test buttons) and updates POST /settings/notifications to render that page.
Settings page now shows a compact link card instead of the full form.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
