fix(inventory): add cache-buster v=2 to inventory.js to force reload

Nginx auto-serves .min.js when .js is requested with try_files.
The browser had the old file cached with 6M expiry. Adding ?v=2
forces clients to fetch the new version with autoMatchCompat exposed.

pos/templates/inventory.html

@@ -815,7 +815,7 @@
   <script src="/pos/static/js/pos-utils.js" defer></script>
   <script src="/pos/static/js/sidebar.js" defer></script>
   <script src="/pos/static/js/virtual-scroll.js" defer></script>
-  <script src="/pos/static/js/inventory.js" defer></script>
+  <script src="/pos/static/js/inventory.js?v=2" defer></script>
   <script src="/pos/static/js/offline-banner.js" defer></script>
   <script src="/pos/static/js/sync-engine.js" defer></script>
   <script>if('serviceWorker' in navigator){navigator.serviceWorker.register('/pos/sw.js',{scope:'/pos/'});}</script>