Add scheduled “Agentic workflow logs” trace indexer and refactor activity reports to consume cached logs

[Copilot]

CraterPort requested moving workflow log downloading into a single scheduled maintenance job and having activity reporting reuse cached data. This change adds a dedicated trace-indexing job with resilient cache updates and refactors activity reports to read pre-indexed artifacts instead of downloading logs directly.

• Maintenance workflow generation

  • Added a new agentic_workflow_logs job (display name: Agentic workflow logs) to both primary and side-repo maintenance generators.
  • Job runs on schedule and on operation == activity_report.
  • Added cache restore/save flow with a run-scoped key and broad restore keys for rolling reuse.
  • Configured trace refresh step with continue-on-error: true and unconditional cache save (if: always()).

• Activity report execution model

  • Updated activity_report jobs to depend on agentic_workflow_logs and restore the same cache.
  • Removed direct log-download cache wiring from activity_report; report generation now consumes ./.cache/gh-aw/agentic-workflow-logs.

• Action scripts

  • Added run_trace_indexer.cjs to refresh 24h/7d log windows via gh aw logs, persist markdown sections into cache, and fail the step on partial refresh failure (while still allowing workflow continuation via continue-on-error).
  • Refactored run_activity_report.cjs to load cached markdown sections from disk and publish the issue from cached trace data.

• Test updates

  • Added focused tests for run_trace_indexer.cjs.
  • Updated run_activity_report tests for cache-backed behavior.
  • Updated maintenance workflow generator tests (main + side-repo) for new job, dependency, cache paths, and setup-go usage count.

agentic_workflow_logs:
  name: Agentic workflow logs
  if: ${{ ...scheduled_or_activity_report... }}
  steps:
    - uses: actions/cache/restore@...
    - name: Refresh agentic workflow logs trace index
      continue-on-error: true
      uses: actions/github-script@...
    - name: Save agentic workflow logs cache
      if: ${{ always() }}
      uses: actions/cache/save@...