test: run pnpm directly in the pnpm workspace state e2e steps

[wan9chi]

Motivation

The pnpm_workspace_state e2e test ran pnpm install and the dependency recheck through vt run --no-cache tasks rather than as plain steps, because running pnpm directly from the harness didn't work on Windows, for two reasons:

• The harness spawns steps through portable-pty, whose PATH search on Windows checks the exact program name in each directory before trying PATHEXT extensions. pnpm's node_modules/.bin has an extensionless shell shim named pnpm next to pnpm.cmd, so the harness picked the shell script, which Windows can't execute.
• The harness canonicalizes its temp directory, which gives verbatim (\\?\D:\...) paths on Windows. cmd.exe, which runs .cmd shims, rejects those as a working directory with "UNC paths are not supported".

Changes

• The harness resolves step programs other than vt and vtt with which::which_in, the same way vp resolves task programs. On Windows, which skips files that aren't Windows binaries and tries the PATHEXT extensions, finding pnpm.cmd. On Unix it finds the same file as before.
• Those programs start in the step's directory simplified with dunce::simplified, which drops the verbatim prefix when the path means the same without it. dunce is a new dev-dependency of vt_bin. vt and vtt keep the working directory they had before.
• The fixture's install and recheck steps now run pnpm directly, and its pnpm-install task is removed.

🤖 Generated with Claude Code

[github-actions]

fspy benchmark

linux

dynamic/launch             change  +4.78%  [-16.20% .. +27.56%]  overhead   +64.80%
dynamic/access             change  -0.50%  [ -8.67% .. +13.74%]  overhead   +11.28%
dynamic/access-relative    change  -0.07%  [ -6.92% ..  +9.84%]  overhead   +44.69%
dynamic/access-contended   change  +2.11%  [ -9.71% .. +17.00%]  overhead    +9.69%
static/launch              change  -1.72%  [-22.09% .. +24.47%]  overhead  +186.57%
static/access              change  -6.54%  [-31.11% .. +10.60%]  overhead  +921.07%
static/access-relative     change  +0.52%  [-16.92% .. +20.26%]  overhead +1490.19%
static/access-contended    change  -2.16%  [-17.05% .. +18.49%]  overhead +2561.69%

macos

dynamic/launch             change  -0.40%  [ -5.83% ..  +4.47%]  overhead  +237.25%
dynamic/access             change  +0.36%  [-39.61% ..  +8.77%]  overhead    +3.54%
dynamic/access-relative    change  +0.20%  [ -3.54% ..  +3.49%]  overhead  +255.22%
dynamic/access-contended   change  -2.29%  [-87.41% ..  +9.00%]  overhead    +6.63%

windows

dynamic/launch             change  -0.40%  [ -2.87% ..  +2.92%]  overhead   +24.69%
dynamic/access             change  +0.00%  [ -0.78% ..  +0.59%]  overhead    +0.99%
dynamic/access-relative    change  +0.00%  [ -0.75% ..  +0.73%]  overhead    +0.97%
dynamic/access-contended   change  +0.00%  [ -0.73% ..  +0.72%]  overhead    +1.30%

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	cargo/​dunce@​1.0.5

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