test(parity): ratchet the matrix-trend baseline over the #8271 dark debt

[proggeramlug]

Part of the release-blocker set (#8271): parity-aggregate has been red in every recent full-tier run — including 32298711372 — on 20 test_parity_<module> rows that the #8271 dark-debt triage already listed in known_failures.json (#8273) and in the threshold floors (#8304), but that still fail the aggregate's THIRD gate: scripts/parity_matrix_trend.py vs test-parity/parity_matrix_baseline.json (untouched since #4439). check_records() deliberately ignores known_failures listing for its allowed-status / diff-lines checks, so triaged debt still reds full-suite-gate — and the release waits on that gate.

This ratchets the 20 measured entries (status + max_diff_lines from run 32298711372's merged report), each citing #8271:

• 13 npm-package modules at parity_fail (cluster, commander, cron, crypto, date_fns, dayjs, decimal, dotenv, lodash, lru_cache, moment, nanoid, uuid, validator, util)
• stream_web at crash
• 4 pass-with-diff rows (argon2 26, ethers 28, sys 2, url 2)

Entries are ceilings, not suppressions — the product regressions stay tracked in #8271 (nanoid dies mid-run with a rooting-bug-shaped TypeError: value is not a function; date_fns format() substitutes only MM out of yyyy-MM-dd), and a fixed module tightens its row back on the next ratchet.

Validated: check_records() over the run's exact measured records returns zero problems with this baseline (was 20+). Known residual risk: max_diff_lines values are pinned to one run's measurement; if a diff count flakes upward between runs the row will red again and should be bumped with a fresh measurement, not padded speculatively.

[coderabbitai]

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