Improve AI description generation for video content and fix errors

Update the AI description generation process to correctly handle and display AI-generated descriptions in the admin interface, including error handling and success notifications.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 170e18f0-0f13-4eca-8643-546bba1dd8cc
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/8cc42625-c1f5-4e43-99bd-77f2c4dedee2/170e18f0-0f13-4eca-8643-546bba1dd8cc/LY6xmBI

server/routes.ts

@@ -1103,12 +1103,15 @@ export async function registerRoutes(app: Express): Promise<Server> {
         includeLabelInfo
       });
       
-      res.json({ 
+      const result = { 
         description,
         title: video.title,
         characterCount: description.length,
         maxCharacters
-      });
+      };
+      
+      console.log("Sending AI response:", result); // Debug log
+      res.json(result);
       
     } catch (error) {
       console.error("Error generating AI description:", error);