diff --git a/openspec/changes/agent-codex-improve-active-agents-extension-runtime-2026-04-22-16-55/tasks.md b/openspec/changes/agent-codex-improve-active-agents-extension-runtime-2026-04-22-16-55/tasks.md
index 416e9e5..1fed938 100644
--- a/openspec/changes/agent-codex-improve-active-agents-extension-runtime-2026-04-22-16-55/tasks.md
+++ b/openspec/changes/agent-codex-improve-active-agents-extension-runtime-2026-04-22-16-55/tasks.md
@@ -11,6 +11,7 @@ This change is complete only when **all** of the following are true:
 - Handoff: change=`agent-codex-improve-active-agents-extension-runtime-2026-04-22-16-55`; branch=`agent/codex/improve-active-agents-extension-runtime-2026-04-22-16-55`; scope=`active-session heartbeat writer, Active Agents tree runtime signals, repo-root changes filtering, lock conflict/context keys, mirrored extension sources/tests/docs`; action=`implement the delta-only runtime gaps, verify focused tests/specs, then finish via PR merge cleanup`.
 - Copy prompt: Continue `agent-codex-improve-active-agents-extension-runtime-2026-04-22-16-55` on branch `agent/codex/improve-active-agents-extension-runtime-2026-04-22-16-55`. Work inside the existing sandbox, review `openspec/changes/agent-codex-improve-active-agents-extension-runtime-2026-04-22-16-55/tasks.md`, continue from the current state instead of creating a new sandbox, and when the work is done run `gx branch finish --branch agent/codex/improve-active-agents-extension-runtime-2026-04-22-16-55 --base main --via-pr --wait-for-merge --cleanup`.
 - Join handoff: resumed the existing sandbox, validated the current heartbeat/runtime diff against proposal + spec, ran focused verification, and will finish via PR merge cleanup from this same lane.
+- Completion handoff: `gx branch finish --branch agent/codex/improve-active-agents-extension-runtime-2026-04-22-16-55 --base main --via-pr --wait-for-merge --cleanup` completed; PR=`https://github.com/recodeee/gitguardex/pull/331`; state=`MERGED`; mergedAt=`2026-04-22T15:24:04Z`; mergeCommit=`a13139639be9eb9751fcfcbe7ec5facd37ddc5ab`; cleanup evidence=`git worktree list` no longer shows the sandbox path and `git branch -a --list "*improve-active-agents-extension-runtime-2026-04-22-16-55*"` returned empty after `git remote prune origin`.
 
 ## 1. Specification
 
@@ -34,6 +35,6 @@ This change is complete only when **all** of the following are true:
 
 ## 4. Cleanup (mandatory; run before claiming completion)
 
-- [ ] 4.1 Run the cleanup pipeline: `gx branch finish --branch agent/codex/improve-active-agents-extension-runtime-2026-04-22-16-55 --base main --via-pr --wait-for-merge --cleanup`. This handles commit -> push -> PR create -> merge wait -> worktree prune in one invocation.
-- [ ] 4.2 Record the PR URL and final merge state (`MERGED`) in the completion handoff.
-- [ ] 4.3 Confirm the sandbox worktree is gone (`git worktree list` no longer shows the agent path; `git branch -a` shows no surviving local/remote refs for the branch).
+- [x] 4.1 Run the cleanup pipeline: `gx branch finish --branch agent/codex/improve-active-agents-extension-runtime-2026-04-22-16-55 --base main --via-pr --wait-for-merge --cleanup`. This handles commit -> push -> PR create -> merge wait -> worktree prune in one invocation.
+- [x] 4.2 Record the PR URL and final merge state (`MERGED`) in the completion handoff.
+- [x] 4.3 Confirm the sandbox worktree is gone (`git worktree list` no longer shows the agent path; `git branch -a` shows no surviving local/remote refs for the branch).