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/cmake/libssh2-config.cmake.in

@@ -0,0 +1,31 @@
+# Copyright (C) The libssh2 project and its contributors.
+# SPDX-License-Identifier: BSD-3-Clause
+
+include(CMakeFindDependencyMacro)
+list(PREPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR})
+
+if("@CRYPTO_BACKEND@" STREQUAL "OpenSSL")
+  find_dependency(OpenSSL)
+elseif("@CRYPTO_BACKEND@" STREQUAL "wolfSSL")
+  find_dependency(WolfSSL)
+elseif("@CRYPTO_BACKEND@" STREQUAL "Libgcrypt")
+  find_dependency(Libgcrypt)
+elseif("@CRYPTO_BACKEND@" STREQUAL "mbedTLS")
+  find_dependency(MbedTLS)
+endif()
+
+if(@ZLIB_FOUND@)
+  find_dependency(ZLIB)
+endif()
+
+include("${CMAKE_CURRENT_LIST_DIR}/@PROJECT_NAME@-targets.cmake")
+
+# Alias for either shared or static library
+if(NOT TARGET @PROJECT_NAME@::@LIB_NAME@)
+  add_library(@PROJECT_NAME@::@LIB_NAME@ ALIAS @PROJECT_NAME@::@LIB_SELECTED@)
+endif()
+
+# Compatibility alias
+if(NOT TARGET Libssh2::@LIB_NAME@)
+  add_library(Libssh2::@LIB_NAME@ ALIAS @PROJECT_NAME@::@LIB_SELECTED@)
+endif()