Over time, every workstation accumulates duplicate files: duplicated photo backups, repeated downloads of large zip archives, cloned repositories, and redundant ISOs. They quietly eat gigabytes of expensive SSD storage. Most people write a simple script that reads all files and compares their hashes. But on large drives, that naive approach has two fatal problems: Performance bottleneck: Hashing thousands of files wastes CPU and disk I/O when 90% of files have unique sizes and can nev...