Refactor: Fix clippy warnings and introduce AppError

server/src/indexer.rs

@@ -22,7 +22,7 @@ pub async fn start_background_indexer(state: Arc<MemoryState>) {
         for result in walker {
             match result {
                 Ok(entry) => {
-                    if entry.file_type().map_or(false, |ft| ft.is_file()) {
+                    if entry.file_type().is_some_and(|ft| ft.is_file()) {
                         let path = entry.path().to_path_buf();
                         let ext = path.extension().and_then(|e| e.to_str()).unwrap_or("");
                         if ["rs", "ts", "js", "jsx", "tsx", "py", "java", "c", "cpp", "go"].contains(&ext) {
@@ -98,7 +98,7 @@ pub async fn start_background_indexer(state: Arc<MemoryState>) {
     });
 }
 
-fn extract_chunks(node: Node, code: &str, chunks: &mut Vec<(String, String, String)>, ext: &str) {
+fn extract_chunks(node: Node, code: &str, chunks: &mut Vec<(String, String, String)>, _ext: &str) {
     let kind = node.kind();
     let is_structural = matches!(
         kind,
@@ -128,7 +128,7 @@ fn extract_chunks(node: Node, code: &str, chunks: &mut Vec<(String, String, Stri
     } else {
         let mut cursor = node.walk();
         for child in node.named_children(&mut cursor) {
-            extract_chunks(child, code, chunks, ext);
+            extract_chunks(child, code, chunks, _ext);
         }
     }
 }