bugfix: change the default name of smart-reading's note editing

Author: Dynamite2003

frontend/src/app/smart-reading/page.tsx

@@ -494,6 +494,7 @@ export default function SmartReadingPage() {
                       <div className={sidePanelMode === "note" ? "flex h-full" : "hidden"}>
                         <NoteEditorPanel
                           ref={noteEditorPanelRef}
+                          paper={uploadedPaper}
                           paperId={uploadedPaper?.id}
                           mineruResult={mineruResult}
                           onExtractText={handleExtractText}

frontend/src/components/note-editor/NoteEditorPanel.tsx

@@ -10,7 +10,7 @@ import "katex/dist/katex.min.css";
 import "@uiw/react-md-editor/markdown-editor.css";
 import "@uiw/react-markdown-preview/markdown.css";
 
-import { createNote, updateNote, fetchNotes, type NoteDTO } from "@/lib/api-client";
+import { createNote, updateNote, fetchNotes, type NoteDTO, type UploadedPaperDTO } from "@/lib/api-client";
 import { getAccessToken } from "@/lib/auth";
 import type { MinerUParseResult } from "@/types/pdf-reader";
 
@@ -20,16 +20,23 @@ const MDEditor = dynamic(
   { ssr: false }
 );
 
+function formatLibraryTitle(filename: string): string {
+  const withoutExt = filename.replace(/\.[^/.]+$/, "");
+  const cleaned = withoutExt.replace(/[_-]+/g, " ").trim();
+  return cleaned || filename;
+}
+
 interface NoteEditorPanelProps {
   paperId?: number;
+  paper?: UploadedPaperDTO | null;
   mineruResult?: MinerUParseResult | null;
   onExtractText?: (text: string) => void;
 }
 
 const NoteEditorPanel = forwardRef<
   { appendContent: (text: string) => void; resetEditor: () => void },
   NoteEditorPanelProps
->(({ paperId, mineruResult }, ref) => {
+>(({ paperId, paper, mineruResult }, ref) => {
   const [title, setTitle] = useState("");
   const [content, setContent] = useState("");
   const [saving, setSaving] = useState(false);
@@ -108,15 +115,6 @@ const NoteEditorPanel = forwardRef<
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [paperId]); // 只依赖paperId
 
-  // 自动填充标题（仅首次，且在新建笔记时）
-  useEffect(() => {
-    if (mineruResult && !hasAutoFilledTitle && !noteId && !title) {
-      const pdfTitle = mineruResult.metadata.title || "未命名文档";
-      setTitle(`关于《${pdfTitle}》的笔记`);
-      setHasAutoFilledTitle(true);
-    }
-  }, [mineruResult, hasAutoFilledTitle, noteId, title]);
-
   // 自动保存（debounce 3秒）
   const triggerAutoSave = useCallback(() => {
     if (autoSaveTimerRef.current) {
@@ -248,6 +246,26 @@ const NoteEditorPanel = forwardRef<
     setHasAutoFilledTitle(true);
   };
 
+  const resolveNoteTitleSource = useCallback((): string => {
+    if (paper?.original_filename) {
+      return formatLibraryTitle(paper.original_filename);
+    }
+
+    const mineruTitle = (mineruResult?.metadata?.title ?? "").trim();
+    if (mineruTitle) return mineruTitle;
+
+    return "";
+  }, [paper?.original_filename, mineruResult?.metadata?.title]);
+
+  useEffect(() => {
+    if (hasAutoFilledTitle || noteId || title) return;
+    const sourceTitle = resolveNoteTitleSource();
+    if (!sourceTitle) return;
+
+    setTitle(`关于《${sourceTitle}》的笔记`);
+    setHasAutoFilledTitle(true);
+  }, [resolveNoteTitleSource, hasAutoFilledTitle, noteId, title]);
+
   return (
     <aside
       className="flex h-full min-h-0 w-full flex-col overflow-hidden rounded-2xl border border-slate-200 bg-white shadow-sm dark:border-slate-700 dark:bg-slate-900"