Squashed 'docs/standards/playbook/' changes from e504a68..b529012

b529012 ✅ test(tests): avoid hardcoded missing path 07583c8 🐛 fix(tests): make doc link check awk-portable 6244aa3 🔧 chore(ci): relax gitattributes check 31dd0c5 🐛 fix(scripts): require existing project root 15d4d63 🔧 chore(ci): install python3-pip 90c6313 🔧 chore(ci): run tests in a single job d84eff0 🔧 chore(ci): make actions base url configurable 395598d 🔧 chore(ci): fix yaml step names 4ae2733 ✨ feat(sync_standards): auto-detect existing languages e97fb00 ✨ feat(sync_standards): default gitattributes to append da0ef2b ✅ test: add automated tests and ci workflow 99bef30 🎨 style(markdown): format all markdown files with prettier 7e96bc8 ♻️ refactor(tsl): split function.md into 44 modular files 0d6b2a0 📝 docs(readme): add quick decision table and TL;DR for distribution methods 3b2188f 🎨 style(markdown): format markdown files with prettier 41fc43b 📝 docs(tsl): document {Unit.}Type source annotation 3dceaf7 📝 docs(tsl): clarify tsf-only top-level rules and type annotations 3a63829 📝 docs(skills): add create-plan skill f02a707 🐛 fix(scripts): escape markdown backticks in vendor_playbook 064aa92 🐛 fix(scripts): correct bat scripts 4881feb 🔧 chore(gitattributes): enforce crlf for bat files 1fa3e2a 🐛 fix(scripts): escape parentheses in sync_standards output 3958cad 📝 docs(vendor_playbook): mention ci templates 9d059cf ✨ feat(templates): add gitea ci example a52bb24 📝 docs(codex_skills): normalize markdown formatting cc8ad4c 📝 docs(skills): slim commit-message 2a98e15 🐛 fix(skills): quote YAML descriptions 8f78d22 🐛 fix(sync_standards): generate minimal AGENTS.md 5547665 ✨ feat(skills): add commit-message suggestion skill 3fe8bd7 🔧 chore(sync_standards): create AGENTS.md on sync 283d311 ✨ feat(playbook): add syntax book and codex skills tooling 5b97ed5 📝 docs(tsl): clarify syntax references 27e0700 ✨ feat(skills): add pdf/docx/pptx/xlsx wrapper workflows 5551363 ✨ feat(skills): add debugging and bulk refactor workflows 1d4f548 ✨ feat(skills): add built-in workflow skills c0895dd 📝 docs(skills): add anthropics document-skills integration cf9f80d 🔧 chore(playbook): add Claude Code skills guide and align python templates git-subtree-dir: docs/standards/playbook git-subtree-split: b529012c59c5d67c3073884d7b617763647417fd
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+---
+name: systematic-debugging
+description:
+  "Systematic debugging for bugs, failing tests, regressions (TSL/C++/Python).
+  Triggers: debug, failing test, regression, crash, 复现, 定位, 排查, 调试."
+---
+
+# Systematic Debugging（系统化调试）
+
+## When to Use
+
+- Bugs, crashes, failing/flaky tests, regressions
+- “It doesn’t work” reports with unclear reproduction
+
+## Inputs（required）
+
+- Expected vs actual behavior
+- Repro command/steps (or best-known approximation)
+- Logs/traces/screenshots/error output
+- Environment details (OS, versions, configs)
+
+## Procedure（default）
+
+1. **Reproduce**
+   - Make the failure deterministic if possible
+   - Minimize repro steps (smallest input/command)
+
+2. **Localize**
+   - Identify failing component and boundary conditions
+   - Add temporary logging/assertions if needed (then remove)
+
+3. **Hypothesize & Test**
+   - Form a small number of hypotheses
+   - Design quick experiments to falsify each hypothesis
+
+4. **Fix & Verify**
+   - Fix the root cause (not just symptoms)
+   - Add/update tests; rerun the minimal relevant suite
+
+## Output Contract（stable）
+
+- Repro: exact steps/command
+- Diagnosis: root cause + evidence
+- Fix: what changed + why it works
+- Verification: commands + outputs/exit codes
+- Follow-ups: hardening or cleanup tasks
+
+## Guardrails
+
+- Avoid changing multiple variables at once
+- Prefer instrumentation and evidence over guessing
+- Keep fixes minimal and scoped