✨ feat(playbook): add syntax book and codex skills tooling

codex/skills/code-review-workflow/SKILL.md

@@ -0,0 +1,57 @@
+---
+name: code-review-workflow
+description: Structured expert code review for TSL/C++/Python diffs or patches. Triggers: code review, review PR, diff, 评审, 审查, 安全评审, 性能评审.
+---
+
+# Code Review Workflow
+
+## When to Use This Skill
+- Review a PR / `git diff` / patch
+- Pre-merge quality gate (correctness/security/perf/tests)
+- Risky refactor, behavior change, auth/data path changes
+
+## Inputs (required)
+- Change set: PR link or `git diff ...` output (must include context)
+- Goal: expected behavior / acceptance criteria (1–3 sentences)
+- Risk level: low|med|high (default: med)
+- Verification: test commands / repro steps (if unknown, ask first)
+
+## Procedure
+1. **Triage**
+   - Identify touched areas, public APIs, behavior changes, data/auth paths
+   - Classify risk (blast radius, rollback difficulty)
+
+2. **Correctness**
+   - Invariants, edge cases, error handling, null/empty, concurrency
+   - Backward compatibility (inputs/outputs, wire formats, config)
+
+3. **Security**
+   - AuthZ/AuthN boundaries, least privilege
+   - Input validation, injection surfaces, secrets/log redaction
+
+4. **Maintainability**
+   - Naming/structure/style aligned with Playbook docs
+   - Complexity hotspots, duplication, clarity of intent
+
+5. **Performance**
+   - Hot paths, algorithmic complexity, allocations/IO, N+1 patterns
+
+6. **Tests & Verification**
+   - Map changes → tests; identify missing coverage
+   - Provide minimal verification plan (commands + expected signals)
+
+## Review Standards (Playbook as authority)
+- Commit message: `docs/common/commit_message.md`
+- TSL: `docs/tsl/code_style.md`, `docs/tsl/naming.md`, `docs/tsl/toolchain.md`
+- C++: `docs/cpp/code_style.md`, `docs/cpp/naming.md`, `docs/cpp/toolchain.md`
+- Python: `docs/python/style_guide.md`, `docs/python/tooling.md`, `docs/python/configuration.md`
+
+## Output Contract (stable)
+- Summary: what changed & why
+- Risk: low|med|high + reasoning
+- Blockers: must-fix before merge (with file/line references when possible)
+- Non-blocking: Major / Minor / Nit
+- Questions: missing context / assumptions
+- Suggested verification: exact commands + what success looks like
+- Optional patch: minimal diff-style suggestions (only when unambiguous)
+