修复无法获得pdf的问题

src/modules/lecture/infrastructure/storage/paths.ts

@@ -7,25 +7,10 @@ import {
 } from "../platform/paths";
 
 function resolveProfileDir(): string {
-  const z = Zotero as any;
-  const candidates: unknown[] = [
-    z.Profile?.dir,
-    typeof z.getProfileDirectory === "function" ? z.getProfileDirectory() : undefined,
-  ];
-
-  for (const candidate of candidates) {
-    const path =
-      typeof candidate === "string"
-        ? candidate
-        : candidate &&
-            typeof candidate === "object" &&
-            "path" in candidate &&
-            typeof (candidate as { path: unknown }).path === "string"
-          ? (candidate as { path: string }).path
-          : "";
-    if (path.trim()) return normalizeStoragePath(path.trim());
+  const dir = (Zotero as any).Profile?.dir;
+  if (typeof dir === "string" && dir.trim()) {
+    return dir.trim();
   }
-
   throw new Error("Cannot resolve Zotero profile directory");
 }