[regression] Daily CI Regression Audit — 32613340583 #54963

Failure patterns (last 3 failed runs inspected):

1. Run 32606397741 — job "Integration: Workflow Misc Part 2" failed with a package-level test failure in github.com/github/gh-aw/pkg/workflow:
   • TestDefaultTimeoutMinutesApplied/no_timeout_specified_-_should_use_default — FAIL
   • TestDefaultTimeoutMinutesApplied (parent) — FAIL
   • Package reported "No individual test marked as failed" warning alongside the above, suggesting possible flakiness/race rather than a deterministic logic bug (coverage completed at 48.8%, no panic/build error observed).
2. Runs 32604580140 and 32604410254 — GitHub API reported no failed jobs for these runs despite overall run failure/cancellation status, indicating the failure may stem from a cancelled dependent job or a non-job-level infra issue rather than a test regression.
3. No repeated error signature across all 3 runs beyond the single TestDefaultTimeoutMinutesApplied occurrence — this appears to be an isolated/flaky failure rather than a confirmed regression pattern, but the tight 3-run failure streak on push events warrants monitoring.

Open regression/bug issues found (label bug/regression, top 5):

• [aw-failures] [P0] Start MCP Gateway silent startup failure — no firewall logs (Smoke Copilot + Smoke Codex) #54953 — [aw-failures] [P0] Start MCP Gateway silent startup failure — no firewall logs (Smoke Copilot + Smoke Codex)
• [aw-failures] [aw] Failure Investigator Report — 2026-08-25 01:11 UTC (6h) #54952 — [aw-failures] [aw] Failure Investigator Report — 2026-08-23 01:11 UTC (6h)
• [aw-failures] [P1] Design Decision Gate: create_issue fails 'Resource not accessible by integration' on copilot/* PR branches #54898 — [aw-failures] [P1] Design Decision Gate: create_issue fails 'Resource not accessible by integration' on copilot/* PR branches
• [aw-failures] [P0] Serena Go language server crashes on missing Go toolchain — breaks 17 shared/mcp/serena-go.md workflows #54759 — [aw-failures] [P0] Serena Go language server crashes on missing Go toolchain — breaks 17 shared/mcp/serena-go.md workflows

None of these open issues directly reference TestDefaultTimeoutMinutesApplied; no existing tracking issue matches this specific failure pattern.