feat(mobile): sqlite asset viewer (#19552)

* add full image provider and refactor thumb providers

* photo_view updates

* wip: asset-viewer

* fix controller dispose on page change

* wip: bottom sheet

* fix interactions

* more bottomsheet changes

* generate schema

* PR feedback

* refactor asset viewer

* never rotate and fix background on page change

* use photoview as the loading builder

* precache after delay

* claude: optimizing rebuild of image provider

* claude: optimizing image decoding and caching

* use proper cache for new full size image providers

* chore: load local HEIC fullsize for iOS

* make controller callbacks nullable

* remove imageprovider cache

* do not handle drag gestures when zoomed

* use loadOriginal setting for HEIC / larger images

* preload assets outside timer

* never use same controllers in photo-view gallery

* fix: cannot scroll down once swipe with bottom sheet

---------

Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>
Co-authored-by: Alex <alex.tran1502@gmail.com>

mobile/lib/routing/router.gr.dart

@@ -403,6 +403,58 @@ class ArchiveRoute extends PageRouteInfo<void> {
   );
 }
 
+/// generated route for
+/// [AssetViewerPage]
+class AssetViewerRoute extends PageRouteInfo<AssetViewerRouteArgs> {
+  AssetViewerRoute({
+    Key? key,
+    required int initialIndex,
+    required TimelineService timelineService,
+    List<PageRouteInfo>? children,
+  }) : super(
+          AssetViewerRoute.name,
+          args: AssetViewerRouteArgs(
+            key: key,
+            initialIndex: initialIndex,
+            timelineService: timelineService,
+          ),
+          initialChildren: children,
+        );
+
+  static const String name = 'AssetViewerRoute';
+
+  static PageInfo page = PageInfo(
+    name,
+    builder: (data) {
+      final args = data.argsAs<AssetViewerRouteArgs>();
+      return AssetViewerPage(
+        key: args.key,
+        initialIndex: args.initialIndex,
+        timelineService: args.timelineService,
+      );
+    },
+  );
+}
+
+class AssetViewerRouteArgs {
+  const AssetViewerRouteArgs({
+    this.key,
+    required this.initialIndex,
+    required this.timelineService,
+  });
+
+  final Key? key;
+
+  final int initialIndex;
+
+  final TimelineService timelineService;
+
+  @override
+  String toString() {
+    return 'AssetViewerRouteArgs{key: $key, initialIndex: $initialIndex, timelineService: $timelineService}';
+  }
+}
+
 /// generated route for
 /// [BackupAlbumSelectionPage]
 class BackupAlbumSelectionRoute extends PageRouteInfo<void> {