feat: fullscreen mode for all tabs + fix Dropbox/Supabase sync priority

api/dropbox-sync.js

@@ -61,7 +61,7 @@ export default async function handler(req, res) {
       .from('products')
       .upsert(productsToUpsert, {
         onConflict: 'product_id',
-        ignoreDuplicates: true
+        ignoreDuplicates: true  // Keep this: will be overwritten by App.tsx logic if there are pending edits
       });
 
     if (error) {