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skills/cross-cutting-concerns/examples/ci-integration-example.md

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+# CI Integration Example
+Automated checks for:
+- Consistent error handling (linter rules)
+- Logging standards (grep for anti-patterns)
+- Config validation (startup tests)
+**Result**: Catch violations before merge

skills/cross-cutting-concerns/examples/error-handling-walkthrough.md

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+# Error Handling Walkthrough
+**Before**: Errors logged everywhere, inconsistent messages
+**After**: Centralized error taxonomy, structured logging at boundaries
+**Result**: 50% reduction in noise, easier debugging

skills/cross-cutting-concerns/examples/file-tier-calculation.md

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+# File Tier Calculation Example
+**file.go**: 50 commits (high churn), complexity 25 (high)
+→ Tier 1 (prioritize for cross-cutting improvements)
+
+**old.go**: 2 commits (stable), complexity 5 (simple)
+→ Tier 3 (defer improvements)