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/libssh2/src/libssh2_setup.h

@@ -0,0 +1,103 @@
+/* Copyright (C) Viktor Szakats
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef LIBSSH2_SETUP_H
+#define LIBSSH2_SETUP_H
+
+/* Header for platform/compiler-specific initialization.
+   Used by 'src', 'example', 'tests' */
+
+/* Define mingw-w64 version macros, eg __MINGW{32,64}_{MINOR,MAJOR}_VERSION */
+#ifdef __MINGW32__
+#include <_mingw.h>
+#endif
+
+/* Configuration provided by build tools (autotools and CMake),
+   and via platform-specific directories for os400 and vms */
+#if defined(HAVE_CONFIG_H) || defined(__OS400__) || defined(__VMS)
+
+#include "libssh2_config.h"
+
+/* Hand-crafted configuration for platforms which lack config tool.
+   Keep this synced with root CMakeLists.txt */
+#elif defined(_WIN32)
+
+#define HAVE_SELECT
+#define HAVE_SNPRINTF
+
+#ifdef __MINGW32__
+# define HAVE_UNISTD_H
+# define HAVE_INTTYPES_H
+# define HAVE_SYS_TIME_H
+# define HAVE_GETTIMEOFDAY
+# define HAVE_STRTOLL
+#elif defined(_MSC_VER)
+# if _MSC_VER >= 1800
+#  define HAVE_INTTYPES_H
+#  define HAVE_STRTOLL
+# else
+#  define HAVE_STRTOI64
+# endif
+# if _MSC_VER < 1900
+#  undef HAVE_SNPRINTF
+# endif
+#endif
+
+#endif /* defined(HAVE_CONFIG_H) */
+
+/* Below applies to both auto-detected and hand-crafted configs */
+
+#ifdef _WIN32
+
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#ifndef NOGDI
+#define NOGDI
+#endif
+#ifndef NONLS
+#define NONLS
+#endif
+
+#ifdef __MINGW32__
+# ifdef __MINGW64_VERSION_MAJOR
+/* Number of bits in a file offset, on hosts where this is settable. */
+#  ifndef _FILE_OFFSET_BITS
+#  define _FILE_OFFSET_BITS 64
+#  endif
+# endif
+#elif defined(_MSC_VER)
+# ifndef _CRT_SECURE_NO_WARNINGS
+# define _CRT_SECURE_NO_WARNINGS  /* for fopen(), getenv() */
+# endif
+# if !defined(LIBSSH2_LIBRARY) || defined(LIBSSH2_TESTS)
+   /* apply to examples and tests only */
+#  ifndef _CRT_NONSTDC_NO_DEPRECATE
+#  define _CRT_NONSTDC_NO_DEPRECATE  /* for strdup(), write() */
+#  endif
+#  ifndef _WINSOCK_DEPRECATED_NO_WARNINGS
+#  define _WINSOCK_DEPRECATED_NO_WARNINGS  /* for inet_addr() */
+#  endif
+   /* we cannot access our internal snprintf() implementation in examples and
+      tests when linking to a shared libssh2. */
+#  if _MSC_VER < 1900
+#   undef HAVE_SNPRINTF
+#   define HAVE_SNPRINTF
+#   define snprintf _snprintf
+#  endif
+# endif
+# if _MSC_VER < 1500
+#  define vsnprintf _vsnprintf
+# endif
+# if _MSC_VER < 1900
+#  define strdup _strdup
+/* Silence bogus warning C4127: conditional expression is constant */
+#  pragma warning(disable:4127)
+# endif
+#endif
+
+#endif /* _WIN32 */
+
+#endif /* LIBSSH2_SETUP_H */