Fix catalog issues: quantity input, checkbox position, glass header

1. Quantity input in Quote mode: replaced button with inline number input
2. Checkbox position: moved to left side (next to panel) instead of right
3. MapPanel glass header: fixed sticky positioning by moving negative margins to children

app/composables/useCatalogSearch.ts

@@ -205,6 +205,11 @@ export function useCatalogSearch() {
     updateQuery({ select: type as SelectMode })
   }
 
+  const setQuantity = (value: string) => {
+    const qty = value ? value : null
+    updateQuery({ qty })
+  }
+
   const clearAll = () => {
     if (isMainPage.value) {
       router.push({ path: localePath('/catalog'), query: {} })
@@ -277,6 +282,7 @@ export function useCatalogSearch() {
     selectItem,
     removeFilter,
     editFilter,
+    setQuantity,
     clearAll,
     setLabel,
     setMapViewMode,