Changed flash message handling to ensure success and error messages
are visible to users after file upload attempts.
Changes:
- Use flash.now for validation errors (no file, wrong type, too large)
so messages display immediately without redirect
- Re-render index page on validation errors instead of redirecting
- Keep regular flash for success messages to persist through redirect
- Refactored file listing into load_uploaded_files helper method
Before: Flash messages were set but not displaying after redirect
After: Users see clear feedback for all upload outcomes
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Ken Johnson
705f7508aa