SnowCat 雪猫底层全源码：NapCat 4.18.28 底座 + SnowLuma 能力移植 + V8 通道适配 9.9.37

26 包 monorepo（TS 全源码）：
- snowcat-core: NT 内核 API 封装 + listener（含 9.9.37 六回调适配）+ Packet 发包
- snowcat-onebot: OneBot v11 全动作 + MCP Streamable HTTP 适配器 + 稳定线
- snowcat-webui-frontend/backend: 雪猫控制台（React+HeroUI）
- snowcat-shell: 单文件 bundle 出口（vite inlineDynamicImports）
- snowcat-native: napi2native / MoeHoo / ffmpeg / pty 运行时
- 56 项 SnowLuma 独门动作移植（qzone 全家桶/群相册/装扮/闪照/收藏）
- 工具件: 解包器/启动器/便携制作器/doctor

GitHub 关联已全量指向 DandanLLab/SnowCatQQ

packages/snowcat-onebot/action/packet/GetRkeyServer.ts

@@ -0,0 +1,56 @@
+import { ActionName } from '@/snowcat-onebot/action/router';
+import { GetPacketStatusDepends } from '@/snowcat-onebot/action/packet/GetPacketStatus';
+import { Type, Static } from '@sinclair/typebox';
+
+export const GetRkeyServerReturnSchema = Type.Object({
+  private_rkey: Type.Optional(Type.String({ description: '私聊 RKey' })),
+  group_rkey: Type.Optional(Type.String({ description: '群聊 RKey' })),
+  expired_time: Type.Optional(Type.Number({ description: '过期时间' })),
+  name: Type.String({ description: '名称' }),
+});
+
+export type GetRkeyServerReturn = Static<typeof GetRkeyServerReturnSchema>;
+
+export class GetRkeyServer extends GetPacketStatusDepends<void, GetRkeyServerReturn> {
+  override actionName = ActionName.GetRkeyServer;
+  override actionSummary = '获取 RKey 服务器';
+  override actionTags = ['系统扩展'];
+  override payloadExample = {};
+  override returnExample = {
+    private_rkey: '&rkey=123456789',
+    group_rkey: '&rkey=123456789',
+    expired_time: 1694560000,
+    name: 'SnowCat 4',
+  };
+
+  override payloadSchema = Type.Object({});
+  override returnSchema = GetRkeyServerReturnSchema;
+
+  private rkeyCache: GetRkeyServerReturn | null = null;
+
+  private expiryTime: number | null = null;
+
+  async _handle () {
+    // 检查缓存是否有效
+    if (this.expiryTime && this.expiryTime > Math.floor(Date.now() / 1000) && this.rkeyCache) {
+      return this.rkeyCache;
+    }
+
+    // 获取新的 Rkey
+    const rkeys = await this.core.apis.PacketApi.pkt.operation.FetchRkey();
+    const privateRkeyItem = rkeys.filter(rkey => rkey.type === 10)[0];
+    const groupRkeyItem = rkeys.filter(rkey => rkey.type === 20)[0];
+
+    this.expiryTime = Math.floor(Date.now() / 1000) + Math.min(+groupRkeyItem!.ttl.toString(), +privateRkeyItem!.ttl.toString());
+
+    // 更新缓存
+    this.rkeyCache = {
+      private_rkey: privateRkeyItem ? privateRkeyItem.rkey : undefined,
+      group_rkey: groupRkeyItem ? groupRkeyItem.rkey : undefined,
+      expired_time: this.expiryTime,
+      name: 'SnowCat 4',
+    };
+
+    return this.rkeyCache;
+  }
+}