FIX: All bug in Custom Enemy, UPDATE: Add specical main skill, optimaze ui in custom enemy

src/app/api/[locale]/monster/[id]/route.ts

@@ -0,0 +1,18 @@
+import { NextRequest, NextResponse } from 'next/server'
+import { loadMonster } from '@/lib/loader'
+
+export async function GET(
+  req: NextRequest,
+  { params }: { params: Promise<{ id: string, locale: string }> }
+) {
+
+  const { id, locale } = await params
+  const monsterData = await loadMonster([id], locale)
+  const monster = monsterData[id]
+
+  if (!monster) {
+    return NextResponse.json({ error: 'Monster info not found' }, { status: 404 })
+  }
+
+  return NextResponse.json(monster)
+}

src/app/api/[locale]/monster/route.ts

@@ -0,0 +1,20 @@
+import { loadMonster } from "@/lib/loader";
+import { NextRequest, NextResponse } from "next/server";
+
+export async function POST(request: NextRequest, { params }: { params: Promise<{ locale: string }> }) {
+  try {
+    const body = await request.json();
+    const monsterIds = body.monsterIds as string[];
+    const { locale } = await params;
+    
+    if (!Array.isArray(monsterIds) || monsterIds.some(id => typeof id !== 'string')) {
+      return NextResponse.json({ error: 'Invalid monsterIds' }, { status: 400 });
+    }
+
+    const monsterData = await loadMonster(monsterIds, locale);
+
+    return NextResponse.json(monsterData);
+  } catch {
+    return NextResponse.json({ error: 'Failed to load monster data' }, { status: 500 });
+  }
+}