The install-suite split branch already merged, but its change checklist still showed the cleanup section as incomplete. This patch records the actual PR, merge commit, and ref-prune evidence so the artifact matches the verified repo state.

Constraint: Original worktree was already pruned, so the evidence update had to land from a tiny follow-up helper lane
Rejected: Leave the cleanup boxes unchecked and rely only on chat handoff text | the change definition of done explicitly requires checked cleanup evidence
Confidence: high
Scope-risk: narrow
Reversibility: clean
Directive: When cleanup proof lands after merge, patch the change artifact instead of leaving stale unchecked completion boxes behind
Tested: openspec validate agent-codex-install-suite-split-and-cli-surface-clea-2026-04-22-10-52 --type change --strict
Tested: git worktree list; git branch -a; gh pr view agent/codex/install-suite-split-and-cli-surface-clea-2026-04-22-10-52 --repo recodeee/gitguardex --json number,state,url,headRefName,baseRefName,mergeCommit
Not-tested: code/test suites unchanged by this tasks.md-only evidence patch