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-core/packet/highway/client.ts

@@ -0,0 +1,73 @@
+import * as stream from 'node:stream';
+import { ReadStream } from 'node:fs';
+import { HighwayTcpUploader } from '@/snowcat-core/packet/highway/uploader/highwayTcpUploader';
+import { HighwayHttpUploader } from '@/snowcat-core/packet/highway/uploader/highwayHttpUploader';
+import { PacketHighwaySig } from '@/snowcat-core/packet/highway/highwayContext';
+import { PacketLogger } from '@/snowcat-core/packet/context/loggerContext';
+
+export interface PacketHighwayTrans {
+  uin: string;
+  cmd: number;
+  command: string;
+  data: stream.Readable;
+  sum: Uint8Array;
+  size: number;
+  ticket: Uint8Array;
+  loginSig?: Uint8Array;
+  ext: Uint8Array;
+  encrypt: boolean;
+  timeout?: number;
+  server: string;
+  port: number;
+}
+
+export class PacketHighwayClient {
+  sig: PacketHighwaySig;
+  server: string = 'htdata3.qq.com';
+  port: number = 80;
+  logger: PacketLogger;
+
+  constructor (sig: PacketHighwaySig, logger: PacketLogger, _server: string = 'htdata3.qq.com', _port: number = 80) {
+    this.sig = sig;
+    this.logger = logger;
+  }
+
+  changeServer (server: string, port: number) {
+    this.server = server;
+    this.port = port;
+  }
+
+  private buildDataUpTrans (cmd: number, data: ReadStream, fileSize: number, md5: Uint8Array, extendInfo: Uint8Array, timeout: number = 1200): PacketHighwayTrans {
+    return {
+      uin: this.sig.uin,
+      cmd,
+      command: 'PicUp.DataUp',
+      data,
+      sum: md5,
+      size: fileSize,
+      ticket: this.sig.sigSession!,
+      ext: extendInfo,
+      encrypt: false,
+      timeout,
+      server: this.server,
+      port: this.port,
+    } as PacketHighwayTrans;
+  }
+
+  async upload (cmd: number, data: ReadStream, fileSize: number, md5: Uint8Array, extendInfo: Uint8Array): Promise<void> {
+    const trans = this.buildDataUpTrans(cmd, data, fileSize, md5, extendInfo);
+    try {
+      const tcpUploader = new HighwayTcpUploader(trans, this.logger);
+      await tcpUploader.upload();
+    } catch (e) {
+      this.logger.error(`[Highway] upload failed: ${e}, fallback to http upload`);
+      try {
+        const httpUploader = new HighwayHttpUploader(trans, this.logger);
+        await httpUploader.upload();
+      } catch (e) {
+        this.logger.error(`[Highway] http upload failed: ${e}`);
+        throw e;
+      }
+    }
+  }
+}