Add provider tag suggestions and tag categories

lib/features/search/presentation/search_controller.dart

@@ -17,11 +17,12 @@ class SearchController extends AsyncNotifier<SearchState> {
   Future<void> updateQuery(String query) async {
     final lastToken =
         query.trim().isEmpty ? '' : query.trim().split(RegExp(r'\s+')).last;
-    final suggestionsResult =
-        await ref.read(searchServiceProvider).autocomplete(lastToken);
-    final suggestions = suggestionsResult is Success<List<String>>
+    final suggestionsResult = await ref
+        .read(searchServiceProvider)
+        .autocompleteDetailed(lastToken, limit: 16);
+    final suggestions = suggestionsResult is Success<List<TagSuggestion>>
         ? suggestionsResult.data
-        : <String>[];
+        : <TagSuggestion>[];
     state = AsyncData(
       (state.value ?? const SearchState()).copyWith(
         query: query,

lib/features/search/presentation/search_state.dart

@@ -8,12 +8,12 @@ class SearchState {
   });
 
   final List<SearchHistory> recent;
-  final List<String> suggestions;
+  final List<TagSuggestion> suggestions;
   final String query;
 
   SearchState copyWith({
     List<SearchHistory>? recent,
-    List<String>? suggestions,
+    List<TagSuggestion>? suggestions,
     String? query,
   }) {
     return SearchState(

lib/features/search/presentation/widgets/search_suggestions.dart

@@ -1,10 +1,12 @@
 import 'package:flutter/material.dart';
 
+import '../../../../backend/backend.dart';
+
 class SearchSuggestions extends StatelessWidget {
   const SearchSuggestions(
       {required this.suggestions, required this.onTap, super.key});
 
-  final List<String> suggestions;
+  final List<TagSuggestion> suggestions;
   final ValueChanged<String> onTap;
 
   @override
@@ -16,8 +18,8 @@ class SearchSuggestions extends StatelessWidget {
       children: [
         for (final suggestion in suggestions)
           ActionChip(
-            label: Text(suggestion),
-            onPressed: () => onTap(suggestion),
+            label: Text('${suggestion.name} · ${suggestion.categoryLabel}'),
+            onPressed: () => onTap(suggestion.name),
           ),
       ],
     );