feat(fonts): implement Phase 4 - Update UI Components

- Replaced fontshareStore with unifiedFontStore in FontSearch.svelte
- Replaced fontshareStore with unifiedFontStore in SuggestedFonts.svelte
- Updated Font entity exports to include unifiedFontStore
- Updated model exports to include unified store exports
- Kept fontshareStore exports as deprecated for backward compatibility

Phase 4/7: Proxy API Integration for GlyphDiff

src/entities/Font/model/index.ts

@@ -38,8 +38,15 @@ export { fetchFontshareFontsQuery } from './services';
 
 export {
     appliedFontsManager,
+    createUnifiedFontStore,
+    selectedFontsStore,
+    type UnifiedFontStore,
+    unifiedFontStore,
+} from './store';
+
+// DEPRECATED: Fontshare store (kept for backward compatibility)
+export {
     createFontshareStore,
     type FontshareStore,
     fontshareStore,
-    selectedFontsStore,
-} from './store';
+} from './store/fontshareStore.svelte';