[feat] loading inventory

src/pages/api/inventory.ts

@@ -145,16 +145,11 @@ export const POST: APIRoute = async ({ request, locals }) => {
             break;
 
         default:
-            return new Response(
-                'Invalid action',
-                {
-                    status: 400,
-                    headers: { 'Content-Type': 'text/html' }
-                }
-            );
+            // No action = list inventory for this card
+            return getInventory(userId!, cardId);
     }
 
-    // Always return current inventory
+    // Always return current inventory after a mutation
     return getInventory(userId!, cardId);