fix: improve maintenance and synchronize live conversations

backend/app/services/shopify_session.py

@@ -59,9 +59,6 @@ class ShopifySessionService:
         Raises HTTPException if invalid.
         """
         try:
-            # Decode without verification first to get the shop
-            unverified = jwt.decode(token, options={"verify_signature": False})
-            
             # Verify the token with Shopify's public key
             # Note: In production, you should fetch and cache Shopify's public keys
             # For now, we'll do basic validation