Offline CSV Cleaner Python CLI Preserve Text Values No Upload

Original AI-assisted Python command-line utility for Python 3.10+. Run csv_audit.py on a local CSV to normalize a rectangular file to UTF-8 comma-separated CSV while preserving parsed text values, including leading zeroes. It supports a delimiter option and refuses malformed or ambiguous input, duplicate headers, ragged rows, an existing output, files over 5 MB, or more than 1,000 data rows. Formula-looking values are preserved and flagged. This is an offline CLI technical tool: no upload, accounts, network, GUI, deduplication, business-rule correction, spreadsheet repair, macros, or subscription is included. Personal and internal commercial use plus modification is licensed; no resale or redistribution of the standalone toolkit. Digital ZIP download only. AI-assisted original code and documentation; no third-party assets are included.