Fix submission flow issues

supabase/functions/process-selective-approval/index.ts

@@ -1301,6 +1301,15 @@ async function createRideModel(supabase: any, data: any): Promise<string> {
     if (error) throw new Error(`Failed to update ride model: ${error.message}`);
   } else {
     console.log('Creating new ride model');
+    
+    // Validate required fields
+    if (!data.manufacturer_id) {
+      throw new Error('Ride model must be associated with a manufacturer');
+    }
+    if (!data.name || !data.slug) {
+      throw new Error('Ride model must have a name and slug');
+    }
+    
     const sanitizedData = sanitizeDateFields(data);
     const filteredData = filterDatabaseFields(sanitizedData, RIDE_MODEL_FIELDS);
     const { data: model, error } = await supabase