fix(web): resolve remaining V21 TypeScript build errors

- Use selected plan id in subscription success message
- Mark route project id as intentionally unused on voices page
- Restores production release build for V21 pages

apps/web/src/pages/subscription/Plans.tsx

@@ -17,7 +17,7 @@ const Plans: React.FC = () => {
   const handleSubscribe = async (planId: string) => {
     try {
       setSubscribing(true);
-      message.success('订阅成功');
+      message.success(`已选择 ${planId} 订阅计划`);
     } catch (error: any) {
       message.error('订阅失败');
     } finally {

apps/web/src/pages/workspace/ProjectVoices.tsx

@@ -15,7 +15,7 @@ const VOICE_OPTIONS = [
 ];
 
 const ProjectVoices: React.FC = () => {
-  const { id: projectId } = useParams<{ id: string }>();
+  const { id: _projectId } = useParams<{ id: string }>();
   const [selectedVoice, setSelectedVoice] = useState<string>('');
 
   return (