[deep-report] Matt Pocock Skills Reviewer: add fallback when pr-triage sub-agent call fails or returns invalid JSON

[github-actions]

Description

Matt Pocock Skills Reviewer success rate dropped from 100% (Aug 4-6, 9) to 54.5% (Aug 13, 11 runs, only 6 succeeded) per discussion #52498. The prompt .github/workflows/mattpocock-skills-reviewer.md hard-depends on invoking a pr-triage sub-agent and parsing its JSON response (Step 3) for skill selection, with no documented fallback if that call times out or returns invalid JSON - so one flaky sub-agent call can sink the entire run.

Expected Impact

A file-extension-based (or similarly simple heuristic) fallback for skill selection would prevent a single sub-agent dependency from causing full-run failures, directly addressing this cycle's regression.

Suggested Agent

Whoever owns .github/workflows/mattpocock-skills-reviewer.md.

Estimated Effort

Quick (< 1 hour) - add a default skill-selection branch when the pr-triage call fails/times out or returns unparseable JSON.

Data Source

DeepReport Intelligence Briefing 2026-08-13 analysis, discussion #52498 (Agent Performance Report - Week of 2026-08-13).

Generated by 🔬 Deep Report · agent · 253.2 AIC · ⌖ 48.7 AIC · ⊞ 11.4K · ◷

• expires on Aug 15, 2026, 7:10 AM UTC-08:00

[github-actions]

🍪 Issue Monster selected this for Copilot

I've identified this issue as a good candidate for automated resolution and requested assignment to the Copilot coding agent.

If assignment succeeds, the Copilot coding agent will analyze the issue and create a pull request with the fix.

Om nom nom! 🍪

🍪 Om nom nom by Issue Monster · gpt54 · 2.81 AIC · ⌖ 9.25 AIC · ⊞ 12.5K · ◷