Merge pull request #16 from fetzu/sad-goldberg

feat(ui): add NAV button and fix GPS status display

docs: update README and CLAUDE.md with current feature set

- Add navigation mode with Swiss map layers (ICAO, Segelflugkarte, Landeskarten, SWISSIMAGE)
- Add offline maps feature for ICAO chart caching
- Add home screen widgets section
- Add flight sharing feature
- Add GPS failure flags on instruments
- Add go-arounds/touch-and-goes detection
- Add bulk import support
- Add Always Use UTC Times and Force ICAO Chart Layer settings
- Update file structure to include NavigationView, OfflineMapManager, and widgets
- Update CLAUDE.md project overview for multi-aircraft support
- Fix iOS/iPadOS version requirements (17.0, not 26.0)

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Co-Authored-By: Claude <[email protected]>

Merge pull request #11 from fetzu/AeroNav

feat(nav): add new navigation mode with interactive map display

chore: priming for 1.0.0 (initial) release