fix: resolve CodeQL sanitization high findings#1630
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- enforce allowlist boundary checks before resolving untrusted workDir paths - harden hook command path escaping for POSIX and Windows shells - replace audit hash chaining primitive with PBKDF2 stretching - extend regression coverage for path pre-check and shell escaping Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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This was referenced Apr 11, 2026
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Summary\n- harden workDir validation to enforce allowlist boundaries before resolving untrusted paths\n- strengthen hook command escaping on POSIX and Windows to prevent shell interpretation\n- replace fast audit hash chaining primitive with PBKDF2 stretching\n- add regression tests for path pre-check and shell escaping\n\n## Context\nThis PR addresses high-severity non-rate-limit CodeQL blockers for promotion PR #1629.\n\n## Validation\n- npm ci\n- npm run lint\n- npm run build\n- npx tsc --noEmit\n- npm test