chore: cleanup for push to main
- Remove CLAUDE.md, TODO.md (dev-only task trackers)
- Remove umutray.service (unused systemd unit)
- Remove .vscode/settings.json (stale Makefile ref)
- Add src/theme.rs (shared palette/styling module)
- Update .gitignore: exclude .vscode/, packaging build artifacts
- Fix README: add gui command, correct service description
- Delete ~1.3GB packaging build artifacts from working tree
Code changes from prior session (already committed locally):
- Tray icon launches alongside GUI, close dialog with minimize-to-tray
- Theme module extraction, button shadow fixes, UI polish
- Game detection filtering, prettify_game_name, Battle.net fix
funman300
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