I need a lightweight software program devoted to processing text data. The core job is simple: read raw text, run a configurable set of transformations, and return clean, structured output. A command-line or very minimal GUI is perfectly acceptable—as long as the program is fast, reliable, and easy for me to extend later. The workflow I have in mind is: • Import plain-text from files or clipboard • Apply user-controlled actions such as find/replace, case conversion, deduplication, word- or character-count statistics • Export the processed result to .txt or .csv Feel free to employ whatever language or framework you are most productive with (Python, Go, C#, Rust, etc.). Cross-platform execution on Windows and macOS would be ideal, but if you have a compelling alternative I’m willing to discuss it. Deliverables • Compiled executable (or runnable script) • All well-commented source code • A short README with build/run instructions Acceptance criteria • Successfully processes a 100 MB text file without crashing • Output matches sample expectations I will supply at hand-off • Uses only open-source or standard-library dependencies If this sounds straightforward to you, let’s get started.