Frontend updates: caching basic data (json) from CDragon

Implement caching in the patch_detector, consume the cache from API routes in frontend

frontend/components/item/Viewer.vue

@@ -7,15 +7,12 @@ const props = defineProps<{
   error?: boolean
 }>()
 
-// Constants
-const ITEMS_API_URL = CDRAGON_BASE + 'plugins/rcp-be-lol-game-data/global/default/v1/items.json'
-
-// State
+// State - use cached API endpoint instead of direct CDragon fetch
 const {
   data: items,
   pending: loadingItems,
   error: itemsError
-} = useFetch(ITEMS_API_URL, {
+} = useFetch('/api/cdragon/items', {
   lazy: true, // Don't block rendering
   server: false // Client-side only
 })