✅ FIXED DEPENDENCY DETECTION:
- Corrected import testing logic for PyQt6 and PyInstaller
- Now properly detects installed packages instead of false negatives
- Uses correct import names: PyQt6.QtWidgets and PyInstaller
- Eliminates false 'missing dependency' errors when packages are installed

TECHNICAL FIX:
- Fixed import_tests dictionary for accurate package detection
- Proper case-sensitive import checking
- Resolves issue where installed packages were incorrectly flagged as missing