fix(spool): Add remaining_weight filter for low stock detection

- Add remaining_weight_lt and remaining_weight_gt filter params to spool API
- Filter uses computed formula: initial_weight - used_weight (falls back to filament.weight)
- Update home page to use queryParams instead of Refine filters
- Fixes low stock badge count on dashboard

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

client/src/pages/home/index.tsx

@@ -60,20 +60,14 @@ export const Home: React.FC<IResourceComponentsProps> = () => {
     ).length;
   }, [spoolsResult?.data]);
 
-  // For accurate low stock count, we need all spools
+  // For accurate low stock count, we need all spools with remaining_weight < threshold
   const { result: lowStockResult } = useList<ISpool>({
     resource: "spool",
     pagination: { pageSize: 1000 },
-    filters: [
-      {
-        field: "remaining_weight",
-        operator: "lt",
-        value: LOW_STOCK_THRESHOLD,
-      },
-    ],
     meta: {
       queryParams: {
         allow_archived: false,
+        remaining_weight_lt: LOW_STOCK_THRESHOLD,
       },
     },
   });