Offline Maps - GPS Tracker

- Improved Dark Mode readability in Settings. - Added protection against invalid indoor GPS fixes, including accidental 0/0 location display.

+ Added a new map-first workspace with modern floating controls. + Added grouped map providers for Apple, OSM, Google viewing, cycling, hiking, nautical, other maps, and FAA chart layers. + Added OSM Vector/OpenFreeMap support through vector map rendering. + Added offline area downloads for supported providers with progress, retry, resume, rename, delete, update, thumbnails, and provider-specific saved-area overlays. + Added a one-time 500 MB offline storage reward after the first successful offline map download. + Added GPS track recording with pause, resume, stop confirmation, background recording, recovery, Live Activity support, and live map drawing. + Added track search, track thumbnails, selected-track display on the map, color and gradient styles, and start/end markers. + Added track import and export for GPX, KML, KMZ, GeoJSON, TCX, and CSV, plus PNG map image sharing. + Added Map Items, a single place to manage tracks, waypoints, and measurements. + Added waypoint creation from current location, long-press, selected coordinates, and GPX import. + Added waypoint icons, renaming, search, show/hide controls, coordinate sharing, and GPX export. + Added waypoint tracking mode with distance labels and guide lines to visible and offscreen waypoints. + Added measurement tools for lines, polylines, radius, circles, rectangles, and polygons with draggable points. + Added measurement import/export for GeoJSON, KML, GPX, and CSV. + Added coordinate inspection and coordinate search for Decimal, DMS, UTM, MGRS, Plus Code, GeoHash, and supported Google Maps links. + Added Settings options for offline maps, measurement units, sleep prevention, support contact, and app information.