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/Tree.vue

@@ -11,13 +11,10 @@ const emit = defineEmits<{
   refresh: []
 }>()
 
-const { data: items } = useFetch<Array<{ id: number; iconPath: string }>>(
-  CDRAGON_BASE + 'plugins/rcp-be-lol-game-data/global/default/v1/items.json',
-  {
-    lazy: true, // Don't block rendering
-    server: false // Client-side only
-  }
-)
+const { data: items } = useFetch<Array<{ id: number; iconPath: string }>>('/api/cdragon/items', {
+  lazy: true, // Don't block rendering
+  server: false // Client-side only
+})
 
 // Create item map reactively
 const itemMap = reactive(new Map<number, { id: number; iconPath: string }>())