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/system/GetSystemMsg.ts

@@ -0,0 +1,69 @@
+import { GroupNotifyMsgStatus } from 'snowcat-core';
+import { OneBotAction } from '@/snowcat-onebot/action/OneBotAction';
+import { ActionName } from '@/snowcat-onebot/action/router';
+import { Static, Type } from '@sinclair/typebox';
+import { OB11NotifySchema } from '../schemas';
+
+export const GetGroupSystemMsgPayloadSchema = Type.Object({
+  count: Type.Union([Type.Number(), Type.String()], { default: 50, description: '获取的消息数量' }),
+});
+
+export type GetGroupSystemMsgPayload = Static<typeof GetGroupSystemMsgPayloadSchema>;
+
+export const GetGroupSystemMsgReturnSchema = Type.Object({
+  invited_requests: Type.Array(OB11NotifySchema, { description: '进群邀请列表' }),
+  InvitedRequest: Type.Array(OB11NotifySchema, { description: '进群邀请列表 (兼容)' }),
+  join_requests: Type.Array(OB11NotifySchema, { description: '进群申请列表' }),
+});
+
+export type GetGroupSystemMsgReturn = Static<typeof GetGroupSystemMsgReturnSchema>;
+
+export class GetGroupSystemMsg extends OneBotAction<GetGroupSystemMsgPayload, GetGroupSystemMsgReturn> {
+  override actionName = ActionName.GetGroupSystemMsg;
+  override payloadSchema = GetGroupSystemMsgPayloadSchema;
+  override returnSchema = GetGroupSystemMsgReturnSchema;
+  override actionSummary = '获取群系统消息';
+  override actionDescription = '获取群系统消息';
+  override actionTags = ['系统接口'];
+  override payloadExample = {
+    count: 50,
+  };
+
+  override returnExample = {
+    invited_requests: [],
+    InvitedRequest: [],
+    join_requests: [],
+  };
+
+  async _handle (params: GetGroupSystemMsgPayload): Promise<GetGroupSystemMsgReturn> {
+    const SingleScreenNotifies = await this.core.apis.GroupApi.getSingleScreenNotifies(false, +params.count);
+    const retData: GetGroupSystemMsgReturn = { invited_requests: [], InvitedRequest: [], join_requests: [] };
+
+    const notifyPromises = SingleScreenNotifies.map(async (SSNotify) => {
+      const invitorUin = SSNotify.user1?.uid ? +await this.core.apis.UserApi.getUinByUidV2(SSNotify.user1.uid) : 0;
+      const actorUin = SSNotify.user2?.uid ? +await this.core.apis.UserApi.getUinByUidV2(SSNotify.user2.uid) : 0;
+      const commonData = {
+        request_id: +SSNotify.seq,
+        invitor_uin: invitorUin,
+        invitor_nick: SSNotify.user1?.nickName || '',
+        group_id: +SSNotify.group?.groupCode,
+        message: SSNotify?.postscript || '',
+        group_name: SSNotify.group?.groupName || '',
+        checked: SSNotify.status !== GroupNotifyMsgStatus.KUNHANDLE,
+        actor: actorUin,
+        requester_nick: SSNotify.user1?.nickName || '',
+      };
+
+      if (SSNotify.type === 1) {
+        retData.InvitedRequest.push(commonData);
+      } else if (SSNotify.type === 7) {
+        retData.join_requests.push(commonData);
+      }
+    });
+
+    await Promise.all(notifyPromises);
+
+    retData.invited_requests = retData.InvitedRequest;
+    return retData;
+  }
+}