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/tests/mansyntax.sh

@@ -0,0 +1,45 @@
+#!/bin/sh
+# Copyright (C) The libssh2 project and its contributors.
+# SPDX-License-Identifier: BSD-3-Clause
+
+set -e
+set -u
+
+# Written by Mikhail Gusarov
+#
+# Run syntax checks for all manpages in the documentation tree.
+#
+# Requirement on macOS: brew install man-db
+#
+
+command -v gman >/dev/null 2>&1 && man() { gman "$@"; }
+
+dstdir="${builddir:-$PWD}"
+mandir="$(dirname "$0")/../docs"
+
+ec=0
+
+#
+# Only test if suitable man is available
+#
+if command -v grep >/dev/null 2>&1 && \
+   man --help 2>/dev/null | grep -q warnings; then
+
+  trap 'rm -f "$dstdir/man3"' EXIT HUP INT TERM
+
+  ln -sf "$mandir" "$dstdir/man3"
+
+  for manpage in "$mandir"/libssh2_*.*; do
+    echo "$manpage"
+    warnings=$(LANG=en_US.UTF-8 MANWIDTH=80 man -M "$dstdir" --warnings \
+      -E UTF-8 -l "$manpage" >/dev/null 2>&1)
+    if [ -n "$warnings" ]; then
+      echo "$warnings"
+      ec=1
+    fi
+  done
+else
+  echo 'mansyntax: Required tool not found, skipping tests.'
+fi
+
+exit "$ec"