Improve DLC product data handling and cache management

Update DLC product fetching to include group filtering, implement precise cache invalidation for DLC-related queries using `exact: false`, and add detailed logging for API requests and responses to aid in debugging.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: b163d4c0-de5e-4f4e-a9c0-aed4c7049718
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/1957c339-2757-4d1f-8e92-e9f71a1ce58e/b163d4c0-de5e-4f4e-a9c0-aed4c7049718/rEII9fE

server/routes.ts

@@ -2319,12 +2319,21 @@ RÉSUMÉ DU SCAN
         userGroups: user.userGroups?.map(ug => ({groupId: ug.group.id, groupName: ug.group.name}))
       });
 
+      console.log("🔍 Pre-validation data:", {
+        body: req.body,
+        userId,
+        combined: { ...req.body, createdBy: userId }
+      });
+
       const validatedData = insertDlcProductFrontendSchema.parse({
         ...req.body,
         createdBy: userId,
       });
 
+      console.log("✅ Post-validation data:", validatedData);
+
       const dlcProduct = await storage.createDlcProduct(validatedData);
+      console.log("📦 Raw returned DLC product:", dlcProduct);
       console.log('✅ DLC Product created successfully:', {
         id: dlcProduct.id,
         productName: dlcProduct.productName,