v1.57.0

Summary

Minor release for the S122 hook cwd guard correctness work.

• slope guard now reads hook stdin before loading repo-local guard config/plugins.
• Guard execution, suppression, baselines, and metrics use HookInput.cwd with process cwd fallback.
• Guard handlers that read config now receive and use the resolved cwd.
• Bundled Codex plugin version is aligned with @slope-dev/slope@1.57.0.

Validation

• pnpm build
• pnpm typecheck
• pnpm test (214 test files passed, 3481 tests passed, Postgres suite skipped)
• node dist/cli/index.js validate --skills
• node dist/cli/index.js roadmap validate
• node dist/cli/index.js map --check
• node dist/cli/index.js version
• git diff --check
• npm pack --dry-run