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/GetRkeyEx.ts

@@ -0,0 +1,41 @@
+import { ActionName } from '@/snowcat-onebot/action/router';
+import { GetPacketStatusDepends } from '@/snowcat-onebot/action/packet/GetPacketStatus';
+import { Type, Static } from '@sinclair/typebox';
+
+export const GetRkeyExReturnSchema = Type.Array(Type.Object({
+  type: Type.String({ description: '类型 (private/group)' }),
+  rkey: Type.String({ description: 'RKey' }),
+  created_at: Type.Number({ description: '创建时间' }),
+  ttl: Type.Number({ description: '有效期' }),
+}), { description: 'RKey 列表' });
+
+export type GetRkeyExReturn = Static<typeof GetRkeyExReturnSchema>;
+
+export class GetRkeyEx extends GetPacketStatusDepends<void, GetRkeyExReturn> {
+  override actionName = ActionName.GetRkeyEx;
+  override payloadSchema = Type.Object({});
+  override returnSchema = GetRkeyExReturnSchema;
+  override actionSummary = '获取扩展 RKey';
+  override actionTags = ['系统扩展'];
+  override payloadExample = {};
+  override returnExample = [
+    {
+      type: 'private',
+      rkey: 'rkey_123',
+      created_at: 1734567890,
+      ttl: 3600,
+    },
+  ];
+
+  async _handle () {
+    const rkeys = await this.core.apis.PacketApi.pkt.operation.FetchRkey();
+    return rkeys.map(rkey => {
+      return {
+        type: rkey.type === 10 ? 'private' : 'group',
+        rkey: rkey.rkey,
+        created_at: Number(rkey.time),
+        ttl: Number(rkey.ttl),
+      };
+    });
+  }
+}