refactor: remove main session key references and enhance agent-gateway associations

backend/app/schemas/agents.py

@@ -112,6 +112,7 @@ class AgentRead(AgentBase):
     """Public agent representation returned by the API."""
 
     id: UUID
+    gateway_id: UUID
     is_board_lead: bool = False
     is_gateway_main: bool = False
     openclaw_session_id: str | None = None

backend/app/schemas/gateway_api.py

@@ -30,7 +30,6 @@ class GatewaysStatusResponse(SQLModel):
     gateway_url: str
     sessions_count: int | None = None
     sessions: list[object] | None = None
-    main_session_key: str | None = None
     main_session: object | None = None
     main_session_error: str | None = None
     error: str | None = None
@@ -40,7 +39,6 @@ class GatewaySessionsResponse(SQLModel):
     """Gateway sessions list response payload."""
 
     sessions: list[object]
-    main_session_key: str | None = None
     main_session: object | None = None
 
 

backend/app/schemas/gateways.py

@@ -62,7 +62,6 @@ class GatewayRead(GatewayBase):
     id: UUID
     organization_id: UUID
     token: str | None = None
-    main_session_key: str
     created_at: datetime
     updated_at: datetime