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/docs/libssh2_channel_direct_streamlocal_ex.3

@@ -0,0 +1,34 @@
+.\" Copyright (C) The libssh2 project and its contributors.
+.\" SPDX-License-Identifier: BSD-3-Clause
+.TH libssh2_channel_direct_streamlocal_ex 3 "10 Apr 2023" "libssh2 1.11.0" "libssh2"
+.SH NAME
+libssh2_channel_direct_streamlocal_ex - Tunnel a UNIX socket connection through an SSH session
+.SH SYNOPSIS
+.nf
+#include <libssh2.h>
+
+LIBSSH2_CHANNEL *
+libssh2_channel_direct_streamlocal_ex(LIBSSH2_SESSION *session,
+                                      const char *socket_path,
+                                      const char *shost, int sport);
+.fi
+.SH DESCRIPTION
+\fIsession\fP - Session instance as returned by
+.BR libssh2_session_init_ex(3)
+
+\fIsocket_path\fP - UNIX socket to connect to using the SSH host as a proxy.
+
+\fIshost\fP - Host to tell the SSH server the connection originated on.
+
+\fIsport\fP - Port to tell the SSH server the connection originated from.
+
+Tunnel a UNIX socket connection through the SSH transport via the remote host to
+a third party. Communication from the client to the SSH server remains
+encrypted, communication from the server to the 3rd party host travels
+in cleartext.
+.SH RETURN VALUE
+Pointer to a newly allocated LIBSSH2_CHANNEL instance, or NULL on errors.
+.SH ERRORS
+\fILIBSSH2_ERROR_ALLOC\fP - An internal memory allocation call failed.
+.SH SEE ALSO
+.BR libssh2_session_init_ex(3)