Native Windows gate/test support, gate result reader, wsl-run helper - #792

Summary

Makes the PR gate and the test suite usable from native Windows (Git Bash) and fixes gate-reader problems found while doing it.

• gate wait/status name the published result when the sentinel key is gone (exit stays 3, never success); new pmctl gate result <id|file> prints verdicts, conclusion and the three verify axes, and falls back to the newest non-empty result.

• Quota exhaustion is reported as executor quota exhausted: <line> with no retry and no reviewer switch; gate.reviewer_executor config pins the reviewer.

• pmctl gate mutations --preview lists touched tests and the mutation checklist (NUL-safe file names).

• ops/diagnostics/wsl-run.sh drives WSL from a native Windows session with arguments and exit status preserved.

• Hook reads its payload without /dev/stdin (failed on every prompt from a Windows host).

• Tests: capability-based skips (th_require_*) with stated reasons, grep -Fi crash avoided, path-spelling fixes; docs in docs/platform-support.md and docs/review-model.md.

• Permanent test admissions: gate rounds 1-6 on this branch each produced findings whose remedy was a new case, assessed against the six criteria. Admitted (criteria 1-6 met; layer: the command/library level, observing stdout, exit status and files through the public pmctl gate / wsl-run.sh entry points): quota-exhausted classification and the reviewer-executor config pin (test-pr-gate.sh), gate result axes after repository drift and its fallback to the newest non-empty result (test-pmctl-gate.sh, test-gate-lifecycle.sh), gate mutations --preview incl. a non-ASCII test name (test-gate-lifecycle.sh), wsl-run script/pmctl argument and exit-status round trip (test-run-tests-in-wsl.sh, native Windows only). Alternatives taken: the fallback cases were folded into the existing sentinel-key case instead of a new matrix, and qa-tester's request for every absent/stale/empty/multiple-candidate variant was declined as boundary-only (criterion 2) with the user's agreement; the advisories (JSON-first verdicts, adapter-declared stderr path) were left as follow-ups.

Verification

• PR gate (native Windows, full tier, parallel, five reviewers) on the final commit: GO; verify artifact_valid/subject_current/policy_applicable all pass.
• WSL2: all touched suites pass (test-pr-gate in 4 shards: 80/81/80/80 passed); CI lints 19 passed, 0 failed, 2 skipped.
• Known open, native Windows only (pass in WSL2): test-pmctl-memory resolve/config/stats, test-pmctl-pm prepare/run, 2 test-pmctl-ship-finish cases; several suites time out natively. Documented in platform-support.md. Native Windows gate stays experimental.
• Advisories not addressed: gate result verdicts from embedded JSON rather than headings; quota evidence from the adapter-declared stderr path; gate wait shows only the first policy-floor error line.

🤖 Generated with Claude Code

https://claude.ai/code/session_01ESW7P8BvZ5Crn6vi6EA2J7