merge upstream/dev into feat/migrate-electric-to-zero

Resolve 8 conflicts:
- Accept upstream deletion of 3 composio_*_connector.py (unified Google connectors)
- Accept our deletion of ElectricProvider.tsx, use-connectors-electric.ts,
  use-messages-electric.ts (replaced by Zero equivalents)
- Keep both new deps in package.json (@rocicorp/zero + @slate-serializers/html)
- Regenerate pnpm-lock.yaml

surfsense_backend/.env.example

@@ -100,7 +100,8 @@ TEAMS_CLIENT_ID=your_teams_client_id_here
 TEAMS_CLIENT_SECRET=your_teams_client_secret_here
 TEAMS_REDIRECT_URI=http://localhost:8000/api/v1/auth/teams/connector/callback
 
-#Composio Coonnector
+# Composio Connector
+# NOTE: Disable "Mask Connected Account Secrets" in Composio dashboard (Settings → Project Settings) for Google indexing to work.
 COMPOSIO_API_KEY=your_api_key_here
 COMPOSIO_ENABLED=TRUE
 COMPOSIO_REDIRECT_URI=http://localhost:8000/api/v1/auth/composio/connector/callback