diff --git a/openspec/changes/agent-codex-surface-doctor-hidden-failures-2026-04-22-17-06/tasks.md b/openspec/changes/agent-codex-surface-doctor-hidden-failures-2026-04-22-17-06/tasks.md
index c5c31e9..af19c4a 100644
--- a/openspec/changes/agent-codex-surface-doctor-hidden-failures-2026-04-22-17-06/tasks.md
+++ b/openspec/changes/agent-codex-surface-doctor-hidden-failures-2026-04-22-17-06/tasks.md
@@ -17,6 +17,9 @@
 
 ## 4. Completion
 
-- [ ] 4.1 Finish the agent branch via PR merge + cleanup (`gx finish --via-pr --wait-for-merge --cleanup` or `bash scripts/agent-branch-finish.sh --branch <agent-branch> --base <base-branch> --via-pr --wait-for-merge --cleanup`).
-- [ ] 4.2 Record PR URL + final `MERGED` state in the completion handoff.
-- [ ] 4.3 Confirm sandbox cleanup (`git worktree list`, `git branch -a`) or capture a `BLOCKED:` handoff if merge/cleanup is pending.
+- [x] 4.1 Finish the agent branch via PR merge + cleanup (`gx finish --via-pr --wait-for-merge --cleanup` or `bash scripts/agent-branch-finish.sh --branch <agent-branch> --base <base-branch> --via-pr --wait-for-merge --cleanup`).
+- [x] 4.2 Record PR URL + final `MERGED` state in the completion handoff.
+- [x] 4.3 Confirm sandbox cleanup (`git worktree list`, `git branch -a`) or capture a `BLOCKED:` handoff if merge/cleanup is pending.
+
+Completion evidence: PR #330 `MERGED` at `2026-04-22T15:22:46Z` — https://github.com/recodeee/gitguardex/pull/330
+Cleanup evidence: `git worktree list --porcelain` no longer shows `agent/codex/surface-doctor-hidden-failures-2026-04-22-17-06`, and `git branch -a --list` returns no remaining local or remote refs for that branch.