Test 4: Validating expected file content...
Expected 10 files
Found 16 unique normalized files in JSON
✓ All required files are present

ERROR: Unexpected extra files found:
  - .hidden_file
  - dir1/file2.py
  - dir1/subdir/file3.json
  - file1.txt
  - files_list.tmp

Total unexpected: 5

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