fix(ai-tags): refresh tagger readiness for lightbox

Load the selected tagger model and model status during app startup so the lightbox AI tags action does not stay disabled until Settings refreshes the state.

Refresh readiness after tagger downloads complete and replace stale WD-specific unavailable copy with generic AI tagger wording.

src/App.tsx

@@ -23,6 +23,8 @@ export default function App() {
   const loadBackgroundJobProgress = useGalleryStore((state) => state.loadBackgroundJobProgress);
   const loadImages = useGalleryStore((state) => state.loadImages);
   const loadCaptionModelStatus = useGalleryStore((state) => state.loadCaptionModelStatus);
+  const loadTaggerModelStatus = useGalleryStore((state) => state.loadTaggerModelStatus);
+  const loadTaggerModel = useGalleryStore((state) => state.loadTaggerModel);
   const loadDuplicateScanCache = useGalleryStore((state) => state.loadDuplicateScanCache);
   const loadAlbums = useGalleryStore((state) => state.loadAlbums);
   const loadMutedFolderIds = useGalleryStore((state) => state.loadMutedFolderIds);
@@ -53,6 +55,8 @@ export default function App() {
     loadFolders().then(async () => {
       void loadBackgroundJobProgress();
       void loadCaptionModelStatus();
+      void loadTaggerModel();
+      void loadTaggerModelStatus();
       void loadDuplicateScanCache();
       await loadAlbums();
       await loadImages(true);