refactor(backend): update API routes and service layer

- Update agent router/service/repository with new endpoints
- Update auth routes with phone-based authentication
- Update users service with new phone lookup
- Update schedule_items with new schemas
- Update message schemas with visibility support
- Update settings with new automation scheduler config
- Update CLI with new commands
- Update tests to match new API contracts

backend/src/v1/users/dependencies.py

@@ -76,11 +76,11 @@ async def _verify_user_with_supabase(token: str) -> CurrentUser | None:
         parsed_id = UUID(user_id)
     except ValueError:
         return None
-    email = getattr(user, "email", None)
+    phone = getattr(user, "phone", None)
     role = getattr(user, "role", None)
     return CurrentUser(
         id=parsed_id,
-        email=email if isinstance(email, str) else None,
+        phone=phone if isinstance(phone, str) else None,
         role=role if isinstance(role, str) else None,
     )
 
@@ -125,9 +125,9 @@ async def get_current_user(
         raise HTTPException(status_code=401, detail="Unauthorized")
 
     logger.debug("JWT validation successful", user_id=str(user_id))
-    email = payload.get("email") if isinstance(payload.get("email"), str) else None
+    phone = payload.get("phone") if isinstance(payload.get("phone"), str) else None
     role = payload.get("role") if isinstance(payload.get("role"), str) else None
-    return CurrentUser(id=user_id, email=email, role=role)
+    return CurrentUser(id=user_id, phone=phone, role=role)
 
 
 async def get_user_repository(