feat(workflows): allow update-awf-version to close superseded PRs

[jamesadevine]

Summary

Allows the update-awf-version agent to close its own superseded pull requests, while restricting closures to PRs that match the exact title pattern this workflow is allowed to open.

Why

The version-updater workflow opens a new PR every time AWF_VERSION, COPILOT_CLI_VERSION, MCPG_VERSION, or ecosystem_domains.json falls behind upstream. Because the PR title includes the version number, an older outdated PR cannot be detected by exact-title duplicate checking and accumulates until a maintainer closes it manually. The agent should be allowed to clean these up — but only its own PRs.

Approach

Restriction is enforced at two layers:

1. Safe-output layer (gh-aw enforced). Added a title-prefix: "chore(deps): " to create-pull-request so every PR the workflow opens is namespaced. Added a new close-pull-request safe output with required-title-prefix: "chore(deps): ", target: "*", max: 10. gh-aw will reject any close request whose target PR title does not start with chore(deps): .

2. Agent-instruction layer. Step 3 of the prompt now tells the agent to look for open PRs starting with the item-specific sub-prefix (e.g. chore(deps): update AWF_VERSION to ), keep any exact match for the latest version, and close older outdated ones via close-pull-request. Explicit guidance forbids crossing item boundaries — a stale MCPG_VERSION PR is not closable from the AWF_VERSION step, even though both share the broader chore(deps): namespace.

PR titles in the markdown body were updated to drop the redundant chore: (gh-aw auto-prepends chore(deps): ), producing clean conventional-commits titles like chore(deps): update AWF_VERSION to 0.24.0.

Files changed

• .github/workflows/update-awf-version.md — added close-pull-request, added title-prefix on create-pull-request, rewrote step 3 and updated PR title templates
• .github/workflows/update-awf-version.lock.yml — recompiled
• .github/aw/actions-lock.json — incidental lockfile refresh from gh aw compile (gh-aw-actions/setup v0.71.5 → v0.72.1)

Verification

gh aw compile update-awf-version
✓ Compiled 1 workflow(s): 0 error(s), 0 warning(s)