feat(search): add search results navigation bar, closes #1183 (#2842)

Add a floating navigation component that appears when search results exist.
The component includes:
   - Top bar: displays search term and current section with TOC and close buttons
   - Bottom bar: search results, previous, and next navigation buttons
   - Page-based navigation using isCfiInLocation to skip between pages with results

apps/readest-app/src/app/reader/components/annotator/AnnotationTools.tsx

@@ -50,7 +50,13 @@ export const annotationToolButtons = createAnnotationToolButtons([
     tooltip: _('Annotate text after selection'),
     Icon: BsPencilSquare,
   },
-  { type: 'search', label: _('Search'), tooltip: _('Search text after selection'), Icon: FiSearch },
+  {
+    type: 'search',
+    label: _('Search'),
+    tooltip: _('Search text after selection'),
+    Icon: FiSearch,
+    quickAction: true,
+  },
   {
     type: 'dictionary',
     label: _('Dictionary'),