初始提交：terminalX 可运行态（M0/M1/M1.5 已真机验证）

- M0: libghostty SSH 终端（渲染/输入/连接）+ 白屏修复(OutputGate) + 会话状态机/自动重连
- M1: tsnet 用户态组网 + SSH-over-tsnet(fd 桥)，shell 级真机验证；R5(Go+gvisor+C+++Swift 同进程) retire
- M1.5: tmux -CC 原生 tab（MVP）
- 结构: packages/(TXCore·TXTransport), apps/TerminalX, vendor/(libghostty-spm/libssh2/mbedtls/tsnet-bridge), artifacts/
- 文档: CLAUDE.md + docs/HANDOFF.md（新会话入口）
- 环境: 认证代理→依赖 vendor 本地化；Go 在 ~/.local/go；仅模拟器/未签名
- 待续: M2 mosh, tmux 多 pane, M4 安全(host key/SE)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

vendor/mbedtls/library/threading_internal.h

@@ -0,0 +1,28 @@
+/**
+ * \file threading_internal.h
+ *
+ * \brief Threading interfaces used by the test framework
+ */
+/*
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+ */
+
+#ifndef MBEDTLS_THREADING_INTERNAL_H
+#define MBEDTLS_THREADING_INTERNAL_H
+
+#include "common.h"
+
+#include <mbedtls/threading.h>
+
+/* A version number for the internal threading interface.
+ * This is meant to allow the framework to remain compatible with
+ * multiple versions, to facilitate transitions.
+ *
+ * Conventionally, this is the Mbed TLS version number when the
+ * threading interface was last changed in a way that may impact the
+ * test framework, with the lower byte incremented as necessary
+ * if multiple changes happened between releases. */
+#define MBEDTLS_THREADING_INTERNAL_VERSION 0x03060000
+
+#endif /* MBEDTLS_THREADING_INTERNAL_H */