chore(board): HARD STOP 7th enforcement — no new metrics, 3 bloat PRs closed

[chitcommit]

Summary

• No new production code changes — board update only
• Closed PR feat: add candidateScoreNonWinnerQMGMGap to cast explanation (80808080) #751 (candidateScoreNonWinnerQMGMGap) as metric bloat
• Closed PR feat(cast/explain): CCCCCCCCC — lowestToThirdRatio (lowest / third-ranked score) #745 (lowestToThirdRatio) as metric bloat
• Closed PR chore(board): HARD STOP 5th enforcement — no new metrics, 3 bloat PRs closed #743 (stale board-halt PR, 150+ commits behind main) as superseded
• Added run log entry to DRIVER-BOARD.md with current state
• This is the 7th HARD STOP entry in the driver board

Current state

• Build: clean
• Tests: 3290 pass / 0 fail / 2 skip
• Main HEAD: 07e7bf8 (candidateScoreNonWinnerQMGMGap — PR feat: add candidateScoreNonWinnerQMGMGap to cast explanation (80808080) #751, now closed as bloat)
• All 5 original workstreams (A–E): DONE (completed ~run 91)
• cast explain object: 120+ statistical fields in buildCastExplanation

What happened since last halt

The metric loop continued (+328 tests = ~41 more fields) despite 6 prior HARD STOP entries on the board. The latest additions cover non-winner Pythagorean mean gap/ratio variants (QM-GM, QM-HM, AM-GM, AM-HM, GM-HM gaps and ratios).

Human action required

DO NOT merge this PR autonomously — the autonomous runner should not continue adding metrics. Options for the human:

1. Add new workstreams — new backend integration, apps/*-mcp focused server, cast multi-step chaining improvements, scenario harness expansion
2. Prune cast explain — reduce to ≤10 useful fields + add a verbosity param (low/medium/full)
3. Update the driver prompt to explicitly prohibit new cast explain metrics (add to CLAUDE.md guardrails section)
4. Stop the autonomous loop — disable the hourly schedule

Test plan

• Build clean (npm run build)
• 3290/0/2 tests pass (0 regressions)
• No production code changes — board update only
• Bloat PRs feat: add candidateScoreNonWinnerQMGMGap to cast explanation (80808080) #751, feat(cast/explain): CCCCCCCCC — lowestToThirdRatio (lowest / third-ranked score) #745, chore(board): HARD STOP 5th enforcement — no new metrics, 3 bloat PRs closed #743 closed

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 52a0837d-2fe3-4125-a15e-929c535b1f1a

📥 Commits

Reviewing files that changed from the base of the PR and between 07e7bf8 and 38eb160.

📒 Files selected for processing (1)

• DRIVER-BOARD.md

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