refactor container selection pattern and improve search UI

app/lib/features/web_feed/domain/providers.dart

@@ -39,6 +39,7 @@ class ArticleSearch extends _$ArticleSearch {
   Future<void> search(
     String input, {
     int snippetLength = 120,
+    int maxResults = 25,
     String matchPrefix = '***',
     String matchSuffix = '***',
     String ellipsis = '…',
@@ -54,6 +55,7 @@ class ArticleSearch extends _$ArticleSearch {
             snippetLength: snippetLength,
             searchString: input,
             feedId: feedId,
+            limit: maxResults,
           )
           .get()
           .then((value) {

app/lib/features/web_feed/domain/providers.g.dart

@@ -50,7 +50,7 @@ final class ArticleSearchProvider
   }
 }
 
-String _$articleSearchHash() => r'cc59a5d3c4b926db9f03ed96db592965ff925b04';
+String _$articleSearchHash() => r'48ed3baa560c0e731626f79a8f6ff3dab1e9bc95';
 
 final class ArticleSearchFamily extends $Family
     with