Draft: feat: implement batch transform feature
Relates to issue #15
This MR was created by Duo in Session 1104000
Changes
- Implement new
/batch-transformroute for file upload processing - Add multipart/form-data form handling with Flask
- Implement server-side file type validation for .txt files only
- Add 5MB file size limit validation
- Generate randomized filenames for security
- Create upload form interface with error handling
- Add comprehensive security measures for file processing