Include src/ scripts in per-platform ui-bundle release zips

[Copilot]

Each GitHub release's platform-specific UI zips only contained the Python app build; the /src shell scripts were only available in the separate cli-bundle zip. This combines both into every platform zip.

Changes

• ui-bundle archive steps — replaced single-artifact archiving with a staging/ directory approach that merges both artifacts before zipping:
  • macOS: ditto -c -k --sequesterRsrc staging release/...zip (preserves resource forks / app bundle metadata)
  • Linux: zip -qr from a staging/ dir containing ok_computer_ui/ + src/
  • Windows: Compress-Archive from a staging/ dir containing ok_computer_ui/ + src/

Resulting zip structure (Linux/Windows example)

ok_computer-ui-linux-v1.2.3.zip
├── ok_computer_ui/        # PyInstaller bundle
└── src/                   # Shell scripts
    ├── app.sh
    ├── init.sh
    └── ...