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/user/SetFriendRemark.ts

@@ -0,0 +1,37 @@
+import { OneBotAction } from '@/snowcat-onebot/action/OneBotAction';
+import { ActionName } from '@/snowcat-onebot/action/router';
+import { Static, Type } from '@sinclair/typebox';
+
+export const SetFriendRemarkPayloadSchema = Type.Object({
+  user_id: Type.String({ description: '对方 QQ 号' }),
+  remark: Type.String({ description: '备注内容' }),
+});
+
+export type SetFriendRemarkPayload = Static<typeof SetFriendRemarkPayloadSchema>;
+
+export default class SetFriendRemark extends OneBotAction<SetFriendRemarkPayload, void> {
+  override actionName = ActionName.SetFriendRemark;
+  override payloadSchema = SetFriendRemarkPayloadSchema;
+  override returnSchema = Type.Null();
+  override actionSummary = '设置好友备注';
+  override actionDescription = '设置好友备注';
+  override actionTags = ['用户接口'];
+  override payloadExample = {
+    user_id: '123456',
+    remark: '测试备注',
+  };
+
+  override returnExample = null;
+  override errorExamples = [
+    { code: 1400, description: '备注设置失败（好友不存在或非法输入）' },
+  ];
+
+  async _handle (payload: SetFriendRemarkPayload): Promise<void> {
+    const friendUid = await this.core.apis.UserApi.getUidByUinV2(payload.user_id.toString());
+    const is_friend = await this.core.apis.FriendApi.isBuddy(friendUid);
+    if (!is_friend) {
+      throw new Error(`用户 ${payload.user_id} 不是好友`);
+    }
+    await this.core.apis.FriendApi.setBuddyRemark(friendUid, payload.remark);
+  }
+}