feat(board): introduce new board agent templates and restructure existing files

backend/tests/test_agent_delete_main_agent.py

@@ -10,6 +10,7 @@ from uuid import UUID, uuid4
 import pytest
 
 import app.services.openclaw.provisioning_db as agent_service
+from app.models.approvals import Approval
 
 
 @dataclass
@@ -106,7 +107,11 @@ async def test_delete_gateway_main_agent_does_not_require_board_id(
         called["delete_lifecycle"] += 1
         return "/tmp/openclaw/workspace-gateway-x"
 
+    updated_models: list[type[object]] = []
+
     async def _fake_update_where(*_args, **_kwargs) -> None:
+        if len(_args) >= 2 and isinstance(_args[1], type):
+            updated_models.append(_args[1])
         return None
 
     monkeypatch.setattr(service, "require_agent_access", _no_access_check)
@@ -124,4 +129,5 @@ async def test_delete_gateway_main_agent_does_not_require_board_id(
 
     assert result.ok is True
     assert called["delete_lifecycle"] == 1
+    assert Approval in updated_models
     assert session.deleted and session.deleted[0] == agent