refactor(agent): remove unused board ensure functionality and related classes

backend/app/schemas/gateway_coordination.py

@@ -1,6 +1,5 @@
 from __future__ import annotations
 
-from datetime import datetime
 from typing import Literal
 from uuid import UUID
 
@@ -9,29 +8,6 @@ from sqlmodel import Field, SQLModel
 from app.schemas.common import NonEmptyStr
 
 
-class GatewayBoardEnsureRequest(SQLModel):
-    name: NonEmptyStr
-    slug: str | None = None
-    board_type: Literal["goal", "general"] = "goal"
-    objective: str | None = None
-    success_metrics: dict[str, object] | None = None
-    target_date: datetime | None = None
-    lead_agent_name: str | None = None
-    lead_identity_profile: dict[str, str] | None = None
-
-
-class GatewayBoardEnsureResponse(SQLModel):
-    created: bool = False
-    lead_created: bool = False
-    board_id: UUID
-    lead_agent_id: UUID | None = None
-
-    # Convenience fields for callers that don't want to re-fetch.
-    board_name: str
-    board_slug: str
-    lead_agent_name: str | None = None
-
-
 class GatewayLeadMessageRequest(SQLModel):
     kind: Literal["question", "handoff"] = "question"
     correlation_id: str | None = None