Test 4: Validating expected file content...
Expected 10 files
Found 15 unique normalized files in JSON
✓ All required files are present

ERROR: Unexpected extra files found:
  - file1.txt
  - subdir1/.hiddenfile
  - subdir1/file2.py
  - subdir1/subdir2/file3.json

Total unexpected: 4

Note: The JSON should contain exactly the files listed in the input directory