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+# Code Review Best Practices
+
+## Default review order
+1. Understand intent and scope.
+2. Check architecture and correctness.
+3. Check tests and failure handling.
+4. Check security and performance risks.
+5. Leave clear, prioritized comments.
+
+## Comment severity
+- `blocking` - correctness, security, data loss, major maintainability issue
+- `important` - should be fixed before merge if practical
+- `nit` - polish only
+
+## Good reviewer habits
+- summarize first,
+- separate required changes from suggestions,
+- quote the code path or failure mode,
+- praise good decisions when they matter.