ci: Update gh aw

[askpt]

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[Copilot]

Pull request overview

This PR updates the repository’s GitHub Agentic Workflows (gh-aw) integration and related workflow lock files, primarily tightening container image pinning (digest-pinned images) and aligning setup tooling to gh-aw v0.77.5.

Changes:

• Pin gh-aw workflow container images by digest in multiple *.lock.yml workflows and update download steps accordingly.
• Update Copilot cloud setup to install gh-aw v0.77.5.
• Add agentic-workflows routing/docs/config (.github/skills/*, .github/mcp.json, .github/agents/*) and update the gh-aw actions/container lock file.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
.github/workflows/repo-assist.lock.yml	Updates pinned container images (tag@digest) and download list.
.github/workflows/issue-triage.lock.yml	Updates pinned container images (tag@digest) and download list.
.github/workflows/ci-coach.lock.yml	Updates pinned container images (tag@digest) and download list.
.github/workflows/copilot-setup-steps.yml	Updates gh-aw CLI setup action + version to v0.77.5.
.github/workflows/agentics-maintenance.yml	Removes the generated maintenance workflow.
.github/skills/agentic-workflows/SKILL.md	Adds a dispatcher skill doc for routing gh-aw workflow tasks.
.github/mcp.json	Adds MCP server configuration for gh-aw MCP server.
.github/aw/actions-lock.json	Updates the gh-aw action/container lock configuration.
.github/agents/agentic-workflows.md	Updates agent dispatcher documentation and references.

Comments suppressed due to low confidence (5)

.github/workflows/agentics-maintenance.yml:1

• .github/workflows/agentics-maintenance.yml is being deleted, but this repo still uses safe-outputs.*.expires (e.g. .github/workflows/ci-coach.md has safe-outputs.create-pull-request.expires: 2d). In gh-aw, the maintenance workflow is generated/required to handle expiry-based maintenance; removing it will stop those periodic cleanups. Please regenerate workflows with gh aw compile (or gh aw compile --validate) and commit the regenerated agentics-maintenance.yml if expires is still used (or remove expires everywhere if the feature is no longer desired).
  .github/agents/agentic-workflows.md:38
• This file now points to .github/aw/github-agentic-workflows.md, but this repository's .github/aw/ directory does not contain that reference doc (it only has actions-lock.json). As written, the agent instructions will send readers to a non-existent local file. Please point to the canonical gh-aw reference (or vendor the .github/aw/*.md reference set into this repo).
  .github/agents/agentic-workflows.md:61
• The "Prompt file" paths under ## Available Prompts are written as local .github/aw/*.md files, but those prompt files are not present in this repository. This will break the dispatcher behavior (it can't load the referenced prompts). Please either (1) update these to the canonical gh-aw repo URLs (pinned to the same gh-aw version you install), or (2) add the prompt files to this repo under .github/aw/.
  .github/agents/agentic-workflows.md:217
• These notes reference .github/aw/github-agentic-workflows.md as if it exists in this repository, but .github/aw/ does not include that file. Linking to a non-existent local path makes the agent instructions unusable; please link to the canonical gh-aw reference (ideally pinned to the same gh-aw version used elsewhere in this repo).
  .github/agents/agentic-workflows.md:224
• The network.md and cli-commands.md references are currently written as local .github/aw/... paths, but those reference files are not present in this repo. Please update these to point at the gh-aw reference docs (or vendor the docs into this repository).