Python File Management Tool Development

I'm looking for a developer to create a Python-based file management application. The application should allow users to copy .txt files from a local directory to a target location, with the ability to rename the file during the copying process.

Key Requirements:
- Command Line Interface (CLI)
- Ability to rename files during copying
- Input validation and error handling
- User-friendly interface
- Use Python’s os and shutil libraries for secure file operations

Ideal Skills and Experience:
- Proficiency in Python
- Experience with file handling in Python
- CLI application development
- Strong understanding of input validation and error handling