Add settings, persistent AppPhoto store, account & settings screens, and map/theme improvements

[krishna3554]

Motivation

• Introduce user-configurable settings and persistence to control map style, overlay position, photo quality, date format, auto-save behavior and theme.
• Replace ad-hoc PhotoManager usage with an internal AppPhoto store so captured geo-tagged images are managed by the app and optionally backed up.
• Surface account and settings UI so users can view profile, enable backup, and change app behavior without rebuilding.
• Improve map rendering and theming by using Google Static Maps thumbnails and adding dark theme support.

Description

• Added new models and services: AppSettings, AppPhoto, AppPhotoStore, SettingsService, BackupService, and extended GoogleMapService to accept mapStyle and zoom parameters.
• Converted MyApp to a StatefulWidget and load settings via SettingsService, wired themeMode and additional routes for SettingsScreen and AccountScreen in app.dart.
• Implemented SettingsScreen for changing settings and persisting them via SettingsService, and an AccountScreen UI with simple profile editing and backup toggle using BackupService.
• Reworked location UI in location_stamp_card.dart to read settings and render a static map image via GoogleMapService, and make coordinates/compass/speed/altitude rows conditional on settings.
• Camera now loads settings (resolution preset, overlay position, date format) and simplified capture flow to only photo captures and geo-tagging; removed video recording code paths and templates.
• Result flow now composes the geo-tagged image, respects autoSaveToGallery setting, and stores metadata in AppPhotoStore; gallery and locations screens were updated to use AppPhotoStore and include an in-app viewer with share/delete actions.
• Added shared_preferences dependency in pubspec.yaml for settings and photo persistence and updated core/theme with a darkTheme config.

Testing

• No automated tests were added or executed as part of this change.

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Codex Task

[chatgpt-codex-connector]

💡 Codex Review

GPS_Camera/lib/features/result/screen/result_screen.dart

Line 106 in 590e2cf

filePath: finalResult.filePath,

Persist app photos outside the temporary directory

When the result image is added to AppPhotoStore, this stores finalResult.filePath, but ImageOverlayService.composeGeoTaggedImage writes that file under getTemporaryDirectory(). In the scenarios where the OS clears temporary/cache files (and especially when autoSaveToGallery is off, making this the only tracked copy), loadPhotos() later drops the entry because the file no longer exists, so saved app photos disappear from Gallery/Locations despite being recorded in preferences. Store a durable app-documents path or track the gallery-saved asset instead.

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GPS_Camera/lib/features/settings/screen/settings_screen.dart

Line 105 in 590e2cf

onChanged: (value) => _save(_settings.copyWith(darkTheme: value)),

Notify the app shell when the theme setting changes

When users toggle App Theme, _save only updates this SettingsScreen state and SharedPreferences; MyApp reads SettingsService.load() once in initState and never listens or reloads after returning from settings. As a result the switch appears to save, but MaterialApp.themeMode stays on the old value for the rest of the session unless the app is restarted.

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