feat: 新增版本管理系统，重构 /health → /api/meta

src/server/routes/meta.ts

@@ -0,0 +1,7 @@
+import type { RuntimeMode } from "../../shared/api";
+
+import { createMetaResponse, jsonResponse } from "../helpers";
+
+export function handleMeta(mode: RuntimeMode, version: string): Response {
+  return jsonResponse(createMetaResponse(version), { mode });
+}