Add admin portal

apps/backend/src/modules/admin/handlers/list-plans-admin.handler.ts

@@ -0,0 +1,24 @@
+import { db } from '@/lib/prisma';
+import type { AppContext } from '@/types/hono';
+
+export async function listPlansAdminHandler(c: AppContext) {
+  const plans = await db.plan.findMany({
+    orderBy: { price: 'asc' },
+    include: {
+      _count: {
+        select: { complexes: true },
+      },
+    },
+  });
+
+  return c.json(
+    plans.map((plan) => ({
+      code: plan.code,
+      name: plan.name,
+      price: Number(plan.price),
+      rules: plan.rules,
+      lastUpdatedAt: plan.lastUpdatedAt.toISOString(),
+      complexCount: plan._count.complexes,
+    }))
+  );
+}