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_scp_send64.3

@@ -0,0 +1,50 @@
+.\" Copyright (C) The libssh2 project and its contributors.
+.\" SPDX-License-Identifier: BSD-3-Clause
+.TH libssh2_scp_send64 3 "17 Apr 2010" "libssh2 1.2.6" "libssh2"
+.SH NAME
+libssh2_scp_send64 - Send a file via SCP
+.SH SYNOPSIS
+.nf
+#include <libssh2.h>
+
+LIBSSH2_CHANNEL *
+libssh2_scp_send64(LIBSSH2_SESSION *session, const char *path, int mode,
+                   libssh2_uint64_t size, time_t mtime, time_t atime);
+.fi
+.SH DESCRIPTION
+\fIsession\fP - Session instance as returned by
+.BR libssh2_session_init_ex(3)
+
+\fIpath\fP - Full path and filename of file to transfer to. That is the remote
+file name.
+
+\fImode\fP - File access mode to create file with
+
+\fIsize\fP - Size of file being transmitted (Must be known ahead of
+time). Note that this needs to be passed on as variable type
+libssh2_uint64_t. This type is 64 bit on modern operating systems and
+compilers.
+
+\fImtime\fP - mtime to assign to file being created
+
+\fIatime\fP - atime to assign to file being created (Set this and
+mtime to zero to instruct remote host to use current time).
+
+Send a file to the remote host via SCP.
+.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.
+
+\fILIBSSH2_ERROR_SOCKET_SEND\fP - Unable to send data on socket.
+
+\fILIBSSH2_ERROR_SCP_PROTOCOL\fP -
+
+\fILIBSSH2_ERROR_EAGAIN\fP - Marked for non-blocking I/O but the call would
+block.
+.SH AVAILABILITY
+This function was added in libssh2 1.2.6 and is meant to replace the former
+\fIlibssh2_scp_send_ex(3)\fP function.
+.SH SEE ALSO
+.BR libssh2_channel_open_ex(3)