Fix production TypeScript build errors across meetups, media proxy, and join modal.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/[locale]/meetups/page.tsx

@@ -46,7 +46,7 @@ interface Meetup {
   accessLevel: MeetupAccessLevel;
   meetingProvider: string;
   mirotalkRoom: string;
-  loungeChannel: string;
+  loungeChannel?: string;
   meetingUrl: string;
   replayUrl: string;
   features: string[];

app/api/media/proxy/route.ts

@@ -59,7 +59,7 @@ async function objectExists(client: ReturnType<typeof getMinioClient>, bucket: s
 }
 
 function passthroughResponse(buffer: Buffer, contentType: string): NextResponse {
-  return new NextResponse(buffer, {
+  return new NextResponse(new Uint8Array(buffer), {
     status: 200,
     headers: {
       "Content-Type": contentType,

app/components/JoinModal.tsx

@@ -83,10 +83,10 @@ export default function JoinModal({ isOpen, onClose, initialEmail = "", vipOnly
         method: "POST",
         body: JSON.stringify({ email: em }),
       });
-      if (!data?.ok) {
+      if (!data?.ok || !data.token) {
         throw new Error(data?.error || (locale === "zh" ? "操作失败" : "Operation failed"));
       }
-      await saveAuth(data.token, data.record);
+      await saveAuth(data.token, data.record ?? {});
       continueAfterAuth(String(data.user_id));
     } catch (err) {
       setError(err instanceof Error ? err.message : "操作失败");