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Four defensive file tools in one standard-library Python CLI, each guarded against destructive mistakes

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A former banking operations worker built python-automation-toolkit, a standard-library-only CLI with four file tools: organize, duplicates, backup, and logs. The tools are designed around safety, with organize avoiding overwrites by suffixing colliding names and duplicates offering a dry-run preview before any deletion. Duplicate detection uses a size pre-filter followed by SHA-256 hashing in 64KB blocks to limit cost and eliminate digest-collision doubts. Backups use timestamped, sorted zip archives with rotation that requires an explicit flag, and the whole suite is covered by 20 pytest tests running in sandboxed temporary directories.

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