Apply automated fixes to clean data quality issues.

Usage

goldencheck fix data.csv                          # safe mode (default)
goldencheck fix data.csv --mode moderate          # + case standardization
goldencheck fix data.csv --mode aggressive --force # + type coercion
goldencheck fix data.csv --dry-run                # preview without writing
goldencheck fix data.csv -o cleaned.csv           # custom output path

Modes

Mode	Fixes	Risk
safe (default)	Trim whitespace, remove invisible chars, normalize Unicode, fix smart quotes/encoding	Zero data loss
moderate	Safe + standardize enum case (match dominant casing)	Minimal — formatting only
aggressive	Moderate + coerce string→numeric types. Requires --force	Data modification

Output

Fixes applied (safe mode):
  name: trim_whitespace (150 rows)
  description: remove_invisible_chars (3 rows)
  notes: fix_smart_quotes (12 rows)

Total: 165 row-fixes across 3 operations
Written to: data_fixed.csv

Behavior

• Default output: {filename}_fixed.csv
• Never overwrites the input file
• --dry-run shows the fix summary without writing
• If no fixes needed: prints “No issues found — file is clean”
• Excel input → CSV output (with warning)