feat(boards): Store gateway config per board

Move gateway configuration into board settings and wire agent\nprovisioning, heartbeat templates, and gateway status lookups\nto use board-specific gateway settings. Adds board_id on agents\nand UI updates for board-scoped selection.\n\nCo-Authored-By: Claude <noreply@anthropic.com>

backend/app/schemas/agents.py

@@ -7,6 +7,7 @@ from sqlmodel import SQLModel
 
 
 class AgentBase(SQLModel):
+    board_id: UUID | None = None
     name: str
     status: str = "provisioning"
 
@@ -16,6 +17,7 @@ class AgentCreate(AgentBase):
 
 
 class AgentUpdate(SQLModel):
+    board_id: UUID | None = None
     name: str | None = None
     status: str | None = None
 
@@ -34,3 +36,4 @@ class AgentHeartbeat(SQLModel):
 
 class AgentHeartbeatCreate(AgentHeartbeat):
     name: str
+    board_id: UUID | None = None

backend/app/schemas/boards.py

@@ -9,15 +9,22 @@ from sqlmodel import SQLModel
 class BoardBase(SQLModel):
     name: str
     slug: str
+    gateway_url: str | None = None
+    gateway_main_session_key: str | None = None
+    gateway_workspace_root: str | None = None
 
 
 class BoardCreate(BoardBase):
-    pass
+    gateway_token: str | None = None
 
 
 class BoardUpdate(SQLModel):
     name: str | None = None
     slug: str | None = None
+    gateway_url: str | None = None
+    gateway_token: str | None = None
+    gateway_main_session_key: str | None = None
+    gateway_workspace_root: str | None = None
 
 
 class BoardRead(BoardBase):