WBS-7.9: target snapshot admin deploy host runner

docs/SYNOLOGY_SNAPSHOT_ADMIN_FINAL_EXECUTION_ONE_PAGER.md

@@ -47,6 +47,20 @@ Confirm that `snapshot_admin_server_v1.py` runs on Synology with loopback bindin
    - Re-run steps 2-7
    - Expected: identical response pattern after restart
 
+## Queue check
+
+If the deployment workflow stays queued for more than a few minutes:
+
+1. Confirm the runner is registered with the host label.
+   - `RUNNER_LABEL=snapshot-admin-host`
+   - Re-register with `bash tools/re_register_act_runner_synology.sh` after setting the registration token.
+2. Confirm the runner daemon is running.
+   - `bash tools/start_act_runner_synology.sh`
+3. Confirm the queue target is the host runner label.
+   - Deploy workflow uses `runs-on: [self-hosted, snapshot-admin-host]`
+4. If another job is occupying the runner, wait for it to finish or cancel the stale workflow from Gitea.
+5. Re-dispatch `snapshot_admin_deploy.yml` after the runner is idle.
+
 ## Pass criteria
 
 - Loopback `200` confirmed.