[Bug] 升级zcode 3.5.3 以后点击左侧ssh 远程目录的刷新图标，无法链接

提交前确认 · Pre-submission checklist

• 我已搜索过现有 issue，确认这不是重复 / I searched existing issues and confirmed this isn't a duplicate.
• 我已阅读 CONTRIBUTING.md / I've read CONTRIBUTING.md.

问题类别 · Category

稳定性 / 崩溃 · Stability / Crash

涉及的 Agent 框架 · Agent framework

ZCode Agent（自研）

严重程度 · Severity

阻塞使用 · Blocking (无法使用核心功能 / core function unusable)

复现频率 · Reproducibility

必现 · Always

问题描述 · Description

升级zcode 3.5.3 以后点击左侧ssh 远程目录的刷新图标，无法链接

复现步骤 · Steps to reproduce

1. 打开zcode
2. 点击左侧ssh远程目录

期望表现 · Expected behavior

1. 链接成功

实际表现 · Actual behavior

1. 一直转圈，ssh链接不了。

btw： 新建ssh目录是可以链接的。

ZCode 版本 · ZCode version

3.5.3

设备 / 系统 / 浏览器 · Device / OS / Browser

win 11

截图 / 录屏 / 日志 · Screenshots / Recordings / Logs

}
[2026-07-28 10:12:20.473] [info] [pid:12484] [main] [host-log] (remote-workspace-ssh-6.12.232.139-2689f65c-1) [host] [remote] [2026-07-28 10:12:21.476] [pid:162793] [zcode-agent] ZCode agent process error {
workspaceKey: 'remote:ssh:xxx:22:xxx:/data/review/0722-mr894',
pid: undefined,
runtimeIdentity: 'remote:ssh:xxx:22:xxx:/data/review/0722-mr8941:unknown',
errorName: 'Error',
errorMessage: 'spawn /home/xxx/.zcode/server/agents/glm/zcode-agent ENOENT',
errorStack: 'Error: spawn /home/xxx/.zcode/server/agents/glm/zcode-agent ENOENT\n' +
' at ChildProcess._handle.onexit (node:internal/child_process:285:19)\n' +
' at onErrorNT (node:internal/child_process:483:16)\n' +
' at process.processTicksAndRejections (node:internal/process/task_queues:90:21)',
spawnPreflight: {
command: '/home/xxx/.zcode/server/agents/glm/zcode-agent',
args: [ 'app-server', '--stdio' ],
requestedCwd: '/data/review/0722-mr894-',
cwd: '/data/review/0722-mr894-',
cwdSource: 'command',
commandPathKind: 'absolute',
commandExists: true,
cwdExists: false
}
}
[2026-07-28 10:12:20.475] [info] [pid:12484] [main] [host-log] (remote-workspace-ssh-6.12.232.139-2689f65c-1) [host] [remote] [2026-07-28 10:12:21.477] [pid:162793] [zcode-agent-service] ZCode Protocol workspace/updateProviderRegistry 失败 {
durationMs: 40,
message: 'write EPIPE',
providerCount: 2,
revision: 'sha256:b238ef0b72901a5c9ea442b573856a212a7db9b4b26cbba136a18a4d701dce59',
workspaceKey: 'remote:ssh:xxx:22:xxx:/data/review/0722-mr894',
workspacePath: '/data/review/0722-mr894'
}
[2026-07-28 10:12:20.478] [warn] [pid:12484] [main] [host-log] (remote-workspace-ssh-6.12.232.139-2689f65c-1) [host] [2026-07-28 10:12:20.472] [pid:160] [zcode-host] [rpc:call] zcode-session.updateProviderRegistry FAIL (92.8ms) {"name":"Error","message":"write EPIPE","stack":"Error: write EPIPE\n at afterWriteDispatched (node:internal/stream_base_commons:159:15)\n at writeGeneric (node:internal/stream_base_commons:150:3)\n at Socket._writeGeneric (node:net:971:11)\n at Socket._write (node:net:983:8)\n at writeOrBuffer (node:internal/streams/writable:572:12)\n at _write (node:internal/streams/writable:501:10)\n at Writable.write (node:internal/streams/writable:510:10)\n at /home/xxx/.zcode/server/zcode-server.cjs:170443:24\n at new Promise ()\n at ZCodeStdioTransport.send (/home/xxx/.zcode/server/zcode-server.cjs:170442:11)"}
[2026-07-28 10:12:20.480] [info] [pid:12484] [main] [host-log] (remote-workspace-ssh-6.12.232.139-2689f65c-1) [host] [remote] [2026-07-28 10:12:21.477] [pid:162793] [zcode-agent] ZCode agent process cleanup completed {
workspaceKey: 'remote:ssh:xxx:xxx:/data/review/0722-mr894-明桥',
pid: undefined,
runtimeIdentity: 'remote:ssh:xxxx:xxx:/data/review/0722-mr894-明桥:1:unknown',
reason: 'protocol-close'
}
[2026-07-28 10:12:20.481] [info] [pid:12484] [main] [host-log] (remote-workspace-ssh-6.12.232.139-2689f65c-1) [host] [remote] /home/xxx/.zcode/server/zcode-server.cjs:169190
this.rejectAll(new Error(ZCode agent transport closed${suffix}));
^

Error: ZCode agent transport closed: spawn /home/xxx/.zcode/server/agents/glm/zcode-agent ENOENT
at /home/xxx/.zcode/server/zcode-server.cjs:169190:24
at Emitter.fire (/home/xxx/.zcode/server/zcode-server.cjs:158227:7)
at ZCodeStdioTransport.fireClose (/home/xxx/.zcode/server/zcode-server.cjs:170562:23)
at ChildProcess. (/home/xxx/.zcode/server/zcode-server.cjs:170416:12)
at Object.onceWrapper (node:events:633:26)
at ChildProcess.emit (node:events:530:35)
at ChildProcess._handle.onexit (node:internal/child_process:291:12)
at onErrorNT (node:internal/child_process:483:16)
at process.processTicksAndRejections (node:internal/process/task_queues:90:21)

Node.js v22.16.0
[2026-07-28 10:12:20.505] [warn] [pid:12484] [main] [host-log] (remote-workspace-ssh-6.12.232.139-2689f65c-1) [host] [ssh] exec channel failed: code=1
[2026-07-28 10:12:20.507] [warn] [pid:12484] [main] [host-log] (remote-workspace-ssh-6.12.232.139-2689f65c-1) [host] [2026-07-28 10:12:20.505] [pid:160] [zcode-host] remote connection closed unexpectedly, exitCode=1

Reproduce the failure by refreshing an existing SSH remote directory after upgrading to ZCode 3.5.3, then inspect the remote-workspace logs and zcode-server.cjs errors. Start with the zcode-agent spawn failure showing ENOENT and cwdExists false, and compare it with creating a new SSH directory. Done means the existing directory connects successfully instead of spinning indefinitely.