- Replace CustomTkinter with PyWebview + Alpine.js GUI
- Add portable Python setup for Windows (setup.ps1)
- Add pip/venv setup for Linux/macOS (setup.sh)
- Fix subprocess console windows on Windows (CREATE_NO_WINDOW)
- Split system info into static (once) and dynamic (polling) calls
- Add two-pass video processing with fade in/out support
- Add .gitignore for python/, ui.yml, model files
- Remove obsolete files (Conda env, French docs, old installers)
- Remove PII from ui.yml (local paths)
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>