feat: add tag assignment deletion and improve agent error handling in provisioning

backend/app/services/board_lifecycle.py

@@ -22,6 +22,7 @@ from app.models.board_webhook_payloads import BoardWebhookPayload
 from app.models.board_webhooks import BoardWebhook
 from app.models.organization_board_access import OrganizationBoardAccess
 from app.models.organization_invite_board_access import OrganizationInviteBoardAccess
+from app.models.tag_assignments import TagAssignment
 from app.models.task_dependencies import TaskDependency
 from app.models.task_fingerprints import TaskFingerprint
 from app.models.tasks import Task
@@ -64,6 +65,14 @@ async def delete_board(session: AsyncSession, *, board: Board) -> OkResponse:
             col(ActivityEvent.task_id).in_(task_ids),
             commit=False,
         )
+        await crud.delete_where(
+            session,
+            TagAssignment,
+            col(TagAssignment.task_id).in_(task_ids),
+            commit=False,
+        )
+    # Keep teardown ordered around FK/reference chains so dependent rows are gone
+    # before deleting their parent task/agent/board records.
     await crud.delete_where(
         session,
         TaskDependency,

backend/app/services/openclaw/provisioning.py

@@ -73,6 +73,15 @@ def _is_missing_session_error(exc: OpenClawGatewayError) -> bool:
     )
 
 
+def _is_missing_agent_error(exc: OpenClawGatewayError) -> bool:
+    message = str(exc).lower()
+    if not message:
+        return False
+    if any(marker in message for marker in ("unknown agent", "no such agent", "agent does not exist")):
+        return True
+    return "agent" in message and "not found" in message
+
+
 def _repo_root() -> Path:
     return Path(__file__).resolve().parents[3]
 
@@ -880,7 +889,11 @@ class OpenClawGatewayProvisioner:
             agent_gateway_id = GatewayAgentIdentity.openclaw_agent_id(gateway)
         else:
             agent_gateway_id = _agent_key(agent)
-        await control_plane.delete_agent(agent_gateway_id, delete_files=delete_files)
+        try:
+            await control_plane.delete_agent(agent_gateway_id, delete_files=delete_files)
+        except OpenClawGatewayError as exc:
+            if not _is_missing_agent_error(exc):
+                raise
 
         if delete_session:
             if agent.board_id is None: