diff --git a/agent-test/plane-dev.md b/agent-test/plane-dev.md
index 95bdca7..9097de8 100644
--- a/agent-test/plane-dev.md
+++ b/agent-test/plane-dev.md
@@ -92,6 +92,19 @@ webhook dispatch trigger gate에 주입하는 non-secret env. secret(`PLANE_WEBH
 - Second backfill attempt failed at `git push` with `could not read Username for 'https://git.toki-labs.com'`. Fix: ensure the Core dev container can read the configured git credential store mount, then recreate the `nomadcode-core-dev` compose service.
 - After both env fixes, redelivering by a small follow-up milestone edit resumed the existing missing-create identity instead of creating a duplicate Plane work item.
 
+### User-visible Git-origin proof (cleaned up after user confirmation)
+
+- Disposable milestone slug: `agent-origin-live-leave-20260703T104229Z`
+- Added milestone path: `agent-roadmap/phase/agent-ops-mcp-control-plane/milestones/agent-origin-live-leave-20260703T104229Z.md`
+- Initial git `origin/develop`: `a808912f4c73b64bf18388925a38a5a41ab8a3ce`
+- Initial Gito event: `event-e06e64248f856bda`, changed file `added`
+- Plane work item created by Core: `78584703-23e1-4ff3-9019-b6f1f5fc580e`
+- Identity backfill git `origin/develop`: `c1db9de07bb26da7e5b8850fce330f48eada323a`
+- Plane final state: `Todo` (`45ba7449-f684-4381-af6d-5854747c5e8d`)
+- Cleanup status: user confirmed inspection, then Plane item deleted (`GET 404`) and active Milestone removed from `origin/develop`.
+- cleanup commit: `b964287 smoke cleanup: remove user-visible agent-origin milestone agent-origin-live-leave-20260703T104229Z`
+- cleanup Gito event: `event-434583e35d1b7249`, changed file `deleted`
+
 ## Agent Usage Notes
 
 - 새 full-cycle test item은 `Backlog` state와 AGENT assignee로 만든다.