feat(file-search): Add support for non-recursive file search (#5648)

Co-authored-by: Jacob Richman <jacob314@gmail.com>

packages/cli/src/ui/hooks/useAtCompletion.ts

@@ -165,6 +165,9 @@ export function useAtCompletion(props: UseAtCompletionProps): void {
             config?.getFileFilteringOptions()?.respectGeminiIgnore ?? true,
           cache: true,
           cacheTtl: 30, // 30 seconds
+          maxDepth: !(config?.getEnableRecursiveFileSearch() ?? true)
+            ? 0
+            : undefined,
         });
         await searcher.initialize();
         fileSearch.current = searcher;