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cmd/testdata/golden/README.md

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+# Golden Files
+
+This directory contains golden files for output contract verification tests.
+
+These files are automatically generated and should not be edited manually.
+To regenerate them, run:
+
+    go test ./cmd -update-golden
+
+## Files
+
+- *_table.golden: Table format output
+- *_json.golden: JSON format output  
+- *_csv.golden: CSV format output
+- *_wide.golden: Wide table format output
+- stats_*.golden: Statistics command output
+
+Each file represents expected output for specific test scenarios.