fix: restore internal control columns and protect them from Dropbox sync overrides

api/dropbox-sync.js

@@ -45,10 +45,10 @@ export default async function handler(req, res) {
       .from('products')
       .select('product_id, status');
 
-    // Protect products with status 'edited' or 'pending'
+    // Protect ALL products that are not 'excel' status (i.e. they have manual edits or special status)
     const manuallyEditedIds = new Set(
       (existingProducts || [])
-        .filter(p => p.status === 'edited' || p.status === 'pending')
+        .filter(p => p.status && p.status !== 'excel')
         .map(p => p.product_id)
     );