feat: add is_board_lead property to agent and board types

backend/app/core/auth.py

@@ -112,17 +112,17 @@ async def get_auth_context_optional(
         clerk_credentials = await guard(request)
     except (RuntimeError, ValueError) as exc:
         raise HTTPException(status_code=status.HTTP_500_INTERNAL_SERVER_ERROR) from exc
-    except HTTPException as exc:
-        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED) from exc
+    except HTTPException:
+        return None
 
     auth_data = _resolve_clerk_auth(request, clerk_credentials)
     try:
         clerk_user_id = _parse_subject(auth_data)
-    except ValidationError as exc:
-        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED) from exc
+    except ValidationError:
+        return None
 
     if not clerk_user_id:
-        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED)
+        return None
 
     user = session.exec(select(User).where(User.clerk_user_id == clerk_user_id)).first()
     if user is None: