修正windows下无法保存的问题

src/modules/ui/lecturePrefs.ts

@@ -25,6 +25,9 @@ export function registerLecturePrefsScripts(win: Window) {
   const mineruPathInput = doc.getElementById(
     "chatpapers-pref-mineru-path",
   ) as HTMLInputElement | null;
+  const lectureDataDirInput = doc.getElementById(
+    "chatpapers-pref-lecture-data-dir",
+  ) as HTMLInputElement | null;
   const hint = doc.getElementById("chatpapers-pref-tts-hint");
   const piperBox = doc.getElementById("chatpapers-pref-piper-box");
 
@@ -83,5 +86,9 @@ export function registerLecturePrefsScripts(win: Window) {
     setPref("mineruPath", mineruPathInput.value);
   });
 
+  lectureDataDirInput?.addEventListener("change", () => {
+    setPref("lectureDataDir", lectureDataDirInput.value.trim());
+  });
+
   updateHint();
 }