Fix script to handle new user with email verification

Problem: New users with email verification enabled receive api_key: null,
but script only checked for existing_user flag, not null API key.

Solution: Check if api_key is null first, then determine if it's:
- Existing unverified user (load key from config)
- New user with verification (api_key comes after verification)
- New user without verification (api_key provided immediately)

This fixes the 'Failed to extract API key' error for new registrations.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

deploy-to-apps.example.sh

@@ -288,7 +288,9 @@ else
         exit 1
     fi
 
-    # Handle existing unverified user (api_key will be null)
+    # Check if API key is null (happens when email verification is enabled)
+    if [ "$SAAC_API_KEY" = "null" ] || [ -z "$SAAC_API_KEY" ]; then
+        # API key will be provided after email verification
         if [ "$EXISTING_USER" = "true" ]; then
             echo "ℹ️  User already exists but not verified"
             echo "   User ID: $USER_ID"
@@ -308,15 +310,20 @@ else
                 fi
             fi
         else
-        # New user - api_key should be present
-        if [ "$SAAC_API_KEY" = "null" ] || [ -z "$SAAC_API_KEY" ]; then
-            echo "❌ Failed to extract API key from registration response"
-            echo "Response: $REGISTER_RESPONSE"
-            exit 1
-        fi
-
+            # New user with email verification enabled
             echo "✅ User registered!"
             echo "   User ID: $USER_ID"
+            echo "   Email verification required"
+            echo ""
+
+            # API key will be null - will get it after verification
+            SAAC_API_KEY=""
+        fi
+    else
+        # API key provided - email verification disabled
+        echo "✅ User registered!"
+        echo "   User ID: $USER_ID"
+        echo "   🔑 API key received"
     fi
 
     echo ""