Fix session-scoped use command by exporting __VFOX_CURTMPPATH

[Copilot]

Session-scoped vfox u -s fails on Windows because __VFOX_CURTMPPATH isn't exported, causing each invocation to potentially use different temp directories.

Root Cause

The shell hook sets __VFOX_PID and __VFOX_SHELL, then each prompt calls vfox env -s pwsh. The env command creates a temp directory path using these variables, stores session versions in {temp}/.tool-versions, but never exports the temp path back to the shell. Subsequent vfox commands then create new temp paths, losing session state.

Changes

• Export __VFOX_CURTMPPATH in envFlag() to persist temp directory path across invocations
• Use internal.HookCurTmpPath constant for consistency with existing code (matches activate.go)

exportEnvs := sdkEnvs.ToExportEnvs()

// Always export __VFOX_CURTMPPATH so that all vfox commands in the session use the same temp directory
curTmpPath := manager.PathMeta.CurTmpPath
exportEnvs[internal.HookCurTmpPath] = &curTmpPath

exportStr := s.Export(exportEnvs)

This ensures all commands in a shell session share the same temp directory for session-level version management.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• version-fox.github.io
  • Triggering command: /tmp/go-build3603188520/b363/http.test /tmp/go-build3603188520/b363/http.test -test.testlogfile=/tmp/go-build3603188520/b363/testlog.txt -test.paniconexit0 -test.timeout=10m0s -test.short=true x64/src/runtime/-D uavocPfSd ache/go/1.24.11/-o yAccounting=yes ota=5% yHigh=170M 01.o ortc�� x64/src/runtime/cgo x64/src/path/match.go ache/go/1.24.11/x64/pkg/tool/lin-lang=go1.18 user.name (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>[BUG]: 0.6.5之后vfox u -s命令失效，未修改Path变量</issue_title>
<issue_description>Version
0.6.5之后

OS
Windows

Describe the bug
0.6.5之后vfox u -s命令失效，未修改Path变量

亲测0.6.5版本是可行的，不知是否与0.6.6版本开始新增的VFOX_*相关环境变量有关

Screenshots[optional]

</issue_description>

Comments on the Issue (you are @copilot in this section)

@jan-bar https://github.com//issues/342#issuecomment-3531176781

执行env | grep __VFOX看看，我上面那个issues也备注了，看下是不是我遇到的问题。问题表现是 __VFOX_PID和__VFOX_CURTMPPATH最后的数字不一致。</comment_new>

• Fixes [BUG]: 0.6.5之后vfox u -s命令失效，未修改Path变量 #571

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