Agent Performance Report - Week of 2026-09-26

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Executive Summary

• Full quality/effectiveness ranking: blocked for a 15th consecutive run. metrics/latest.json is still dated 2026-09-01 (25 days stale, collection_status: complete unchanged), because Metrics Collector itself is one of the 3 broken workflows below.
• Root cause: 3 single-line config bugs, root-caused with exact diffs since at least 2026-09-22, have now self-expired three times (#63098 → #63348 → currently #63556, open) via expires: 1d auto-closure without any fix PR landing.
• Independently re-verified all 3 against the live repo (not just shared-memory notes) — see table below.
• Top performer this cycle: Workflow Health Manager — correctly diagnosed and re-diagnosed the same 3 issues with reproducible evidence across 4+ runs, and filed a fresh, still-open tracker (#63556) rather than letting the pattern go unreported a 3rd time.
• Systemic finding: the ecosystem has a "diagnose-but-never-convert-to-PR" gap. Two prior Copilot-assigned attempts to convert the tracker into a fix (#57946, #58722, both closed unmerged 2026-09-05) and one direct Copilot-assignment attempt on #63098 (2026-09-24) all failed to produce a merged fix.

Root-Cause Verification Table (re-confirmed 2026-09-26)

#	Workflow	File:Line	Issue	Verified state (direct file read)	Fix
1	avenger	.github/workflows/avenger.md:42	/usr/local/bin/npm:/usr/local/bin/npm:ro bind-mounts a symlink; gVisor/AWF sandbox refuses symlink bind mountpoints, crashing every run	Confirmed still present	Remove the npm symlink mount line (2 prior PRs #57946, #58722 already contain the diff, both closed unmerged)
2	metrics-collector	.github/workflows/metrics-collector.md:14-16	engine: block has only id: codex, missing model-provider: github, causing model_not_supported_error	Confirmed still missing (diffed against working siblings daily-go-test-parallelizer.md, api-consumption-report.md, both of which have model-provider: github)	Add model-provider: github under engine:
3	gpclean	.github/workflows/gpclean.md:58,61	model-provider: openai + model: openai/gpt-5-codex — gpt-5-codex is retired	Confirmed still hardcoded	Change to model-provider: github / model: copilot/gpt-5.3-codex (matching the repo's current default)

Self-Expiry Loop Timeline

Tracker	Filed	Closed	State reason
#63098	~2026-09-22	2026-09-25T06:56:34Z	not_planned (auto-expiry, no fix PR)
#63348	2026-09-25T04:46Z	2026-09-26T06:52:59Z	not_planned (auto-expiry, no fix PR)
#63556	2026-09-26T04:47Z	open (current)	—

Each tracker used expires: 1d. No merged PR has ever touched avenger.md, metrics-collector.md, or gpclean.md to apply these fixes; the only related PRs found (#57946, #58722) are both closed-unmerged from 2026-09-05, predating the current tracking cycle, and their diffs remain applicable today.

Behavioral Patterns

Productive Patterns ✅

• Workflow Health Manager correctly root-causes the same defects repeatedly with concrete evidence (job-log links, byte-for-byte config diffs against working sibling workflows) rather than degrading into vague restatements.
• Agent Performance Analyzer (this workflow) independently re-verifies WHM's claims against live files each run instead of trusting shared memory blindly — this run confirmed all 3 root causes firsthand.

Problematic Patterns ⚠️

• inconsistency / process gap (ecosystem-wide, not agent-specific): expires: 1d on P1 workflow-health trackers auto-closes issues before any human or automated actor converts the diagnosis into a merged PR — a structural mismatch between the tracker's lifecycle and the human/automation response time. This has now recurred 3 times for the identical findings.
• under-creation (fix conversion): No agent in the ecosystem currently has a mandate/safe-output to open a PR from a diagnosed one-line config fix; diagnosis-only agents (Workflow Health Manager) lack create_pull_request in their safe-outputs, and generic Copilot-assignment on the tracker issue has been tried and failed twice (2026-09-05, 2026-09-24) to yield a merged fix.
• Metrics blackout side-effect: Because Metrics Collector is one of the 3 broken workflows, agent-performance-analyzer and other consumers of metrics/latest.json have had zero fresh quantitative data for 25 days, blocking objective quality/effectiveness scoring ecosystem-wide.

Recommendations

High Priority

1. Apply the 3 one-line fixes directly (avenger.md, metrics-collector.md, gpclean.md) — total diff is ~4 lines across 3 files, already fully specified in #63556. Estimated effort: <15 minutes. Expected impact: unblocks Metrics Collector immediately, restoring fresh metrics/latest.json within 24h and ending the 15-run analysis blackout.
2. Exempt priority-p1/priority-p0 workflow-health trackers from expires: 1d, or extend to expires: 7d, so a diagnosed fix has a realistic window to be converted into a PR before the tracker self-closes and the finding is lost from the open-issue view. Estimated effort: 1-line frontmatter change in workflow-health-manager.md. Expected impact: breaks the 3-cycle self-expiry loop for this and future findings.
3. Give Workflow Health Manager (or a dedicated fix-conversion agent) a create_pull_request safe-output scoped to single-line/low-risk config fixes it has already root-caused with an exact diff, rather than relying on generic Copilot-assignment (which has failed to convert 3 separate opportunities into a merged PR so far). Estimated effort: 2-4 hours. Expected impact: closes the diagnose-but-never-convert-to-PR gap systemically, not just for this incident.

Medium Priority

1. Re-point Copilot assignment specifically at the diff text in #63556 (rather than the issue body alone) if automated PR generation is retried, since generic assignment on #63098 alone did not produce a PR on 2026-09-24.
2. Once Metrics Collector is restored, backfill a note in metrics/latest.json's next snapshot flagging the 25-day gap so downstream trend calculations don't misread it as a quiet period.

Trends

• Metrics freshness: 25 days stale (unchanged this run) — still blocked.
• Full agent quality/effectiveness ranking: unavailable for the 15th consecutive run.
• Self-expiry cycles for the same 3 findings: 3 (↑ from 2 last week).

Actions Taken This Run

• Directly re-read avenger.md, metrics-collector.md, and gpclean.md and diffed against 2 correctly-configured sibling workflows to independently confirm all 3 root causes remain unfixed.
• Confirmed via issue_read that both #63098 and #63348 closed not_planned (auto-expiry, not fixes), and identified the current live successor tracker #63556 (open).
• Searched merged/closed PRs referencing the 3 affected files; found only 2 unmerged closed PRs from 2026-09-05 (#57946, #58722) whose diffs remain applicable but were never merged.
• Filed this weekly performance report documenting the 3rd self-expiry cycle and prioritized recommendations to break the loop.
• Full agent quality/effectiveness ranking remains blocked pending the Metrics Collector fix; no issue-creation quota was spent on a duplicate tracker since #63556 already captures the finding accurately.

Next Steps

1. Apply or merge the 3 one-line config fixes referenced in #63556.
2. Adjust expires policy for P0/P1 workflow-health trackers to prevent a 4th self-expiry cycle.
3. Evaluate giving a meta-orchestrator direct PR-creation capability for root-caused single-line fixes.
4. Resume full agent quality/effectiveness ranking once metrics/latest.json refreshes.

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Analysis period: 2026-09-19 to 2026-09-26
Next report: 2026-10-03

Generated by ⚡ Agent Performance Analyzer - Meta-Orchestrator · copilot · auto · 67.3 AIC · ⌖ 8.33 AIC · ⊞ 17.8K · ◷

• expires on Sep 27, 2026, 4:56 AM UTC-08:00

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This discussion was automatically closed because it expired on 2026-09-27T12:56:45.330Z.

Closed by Workflow