refactor: simplify code formatting and improve readability across multiple files

backend/app/api/board_group_memory.py

@@ -26,21 +26,14 @@ from app.core.time import utcnow
 from app.db.pagination import paginate
 from app.db.session import async_session_maker, get_session
 from app.integrations.openclaw_gateway import GatewayConfig as GatewayClientConfig
-from app.integrations.openclaw_gateway import (
-    OpenClawGatewayError,
-    ensure_session,
-    send_message,
-)
+from app.integrations.openclaw_gateway import OpenClawGatewayError, ensure_session, send_message
 from app.models.agents import Agent
 from app.models.board_group_memory import BoardGroupMemory
 from app.models.board_groups import BoardGroup
 from app.models.boards import Board
 from app.models.gateways import Gateway
 from app.models.users import User
-from app.schemas.board_group_memory import (
-    BoardGroupMemoryCreate,
-    BoardGroupMemoryRead,
-)
+from app.schemas.board_group_memory import BoardGroupMemoryCreate, BoardGroupMemoryRead
 from app.schemas.pagination import DefaultLimitOffsetPage
 from app.services.mentions import extract_mentions, matches_agent_mention
 from app.services.organizations import (