feat: implement comments and activity panel in workspace

- Added CommentsPanel component for managing comments on documents.
- Integrated comment creation, deletion, and resolution functionalities.
- Implemented activity tracking for document interactions.
- Enhanced SketchPage with editing and saving capabilities.
- Introduced template management API endpoints for creating, sharing, and deleting templates.
- Added runtime validation report for frontend and backend.
- Created GettingStartedPanel for user onboarding with template options.
- Implemented Playwright E2E tests for accessibility and export functionality.

backend/app/main.py

@@ -9,8 +9,11 @@ from sqlalchemy.exc import OperationalError
 from app.config import settings
 from app.database import Base, engine
 from app.mongo import close_mongo, connect_mongo
-from app.routers import auth, collab, documents, health
+from app.routers import auth, collab, documents, health, templates
+from app.services.collaboration_service import ensure_collaboration_indexes
 from app.services.document_service import ensure_indexes
+from app.services.template_service import ensure_template_indexes
+from app.services.history_service import ensure_history_indexes
 
 logger = logging.getLogger(__name__)
 
@@ -28,6 +31,9 @@ async def lifespan(_: FastAPI):
         from app.mongo import get_mongo_db
 
         await ensure_indexes(get_mongo_db())
+        await ensure_collaboration_indexes(get_mongo_db())
+        await ensure_template_indexes(get_mongo_db())
+        await ensure_history_indexes(get_mongo_db())
         logger.info("MongoDB connected and indexes ready")
     except Exception:
         logger.warning("MongoDB unavailable — will connect when available")
@@ -49,6 +55,7 @@ app.add_middleware(
 app.include_router(health.router, prefix="/api/v1")
 app.include_router(auth.router, prefix="/api/v1")
 app.include_router(documents.router, prefix="/api/v1")
+app.include_router(templates.router, prefix="/api/v1")
 app.include_router(collab.router, prefix="/api/v1")