debug: add detailed logging for username generation

app/plans/page.tsx

@@ -163,18 +163,34 @@ export default function PlansNew() {
       const telegramWebApp = (window as any).Telegram?.WebApp;
       const user = telegramWebApp?.initDataUnsafe?.user;
       
+      console.log('🔍 TELEGRAM USER DATA:', {
+        hasWebApp: !!telegramWebApp,
+        hasInitData: !!telegramWebApp?.initDataUnsafe,
+        hasUser: !!user,
+        user: user ? {
+          id: user.id,
+          username: user.username,
+          first_name: user.first_name,
+          last_name: user.last_name,
+        } : null
+      });
+      
+      const requestBody = {
+        planType,
+        period,
+        locationIds,
+        telegramId: user?.id || null,
+        telegramUsername: user?.username || null,
+        firstName: user?.first_name || null,
+        lastName: user?.last_name || null,
+      };
+      
+      console.log('📤 REQUEST BODY:', requestBody);
+      
       const response = await fetch('/api/create-user', {
         method: 'POST',
         headers: { 'Content-Type': 'application/json' },
-        body: JSON.stringify({
-          planType,
-          period,
-          locationIds,
-          telegramId: user?.id || null,
-          telegramUsername: user?.username || null,
-          firstName: user?.first_name || null,
-          lastName: user?.last_name || null,
-        }),
+        body: JSON.stringify(requestBody),
       });
 
       const data = await response.json();