fix(cli): resolve Windows shims in case-sensitive directories

[fengmk2]

Summary

Fixes #2690.

On Windows, pnpm 12 writes lowercase .cmd shims. In a case-sensitive node_modules/.bin directory, PATHEXT=.COM;.EXE;.BAT;.CMD makes which check astro.CMD before correcting filename casing, so vp run fails to plan the task and vp exec astro reports that the command is missing.

Resolve Windows executable candidates using their actual filename casing in vp_command, preserving PATH and PATHEXT precedence. Use Vite+'s existing mutable command-handler hook to supply the resolved path before Vite Task's own lookup. This fixes nested tasks and direct execution entirely within Vite+, without dependency changes or PATHEXT mutation.

The Windows snapshot job sets SystemTemp to an isolated directory on the runner's NTFS workspace volume, outside runner.temp so Yarn does not inherit setup-node's .npmrc. Rust uses GetTempPath2, which ignores the existing TEMP/TMP overrides under SYSTEM; the runner's default C:\Windows\SystemTemp rejects case-sensitive directory flags, while its workspace volume supports them.

Validation

• CI passed on commit 999f317b, including all three Windows snapshot shards and both case-sensitive shim entrypoints.

• Reproduced the failure with published Vite+ 0.3.2, pnpm 12.4.1, and Astro 7.3.2 in a case-sensitive Windows directory. With the compiled fix, the unchanged nested task and vp exec both run Astro successfully.

• cargo test -p vp_command -p vite-plus-cli --lib --locked: 91 tests passed, including 10 new resolver/handler tests.

• Focused Clippy for both crates, all targets and the rolldown feature, passed with warnings denied and the repository's existing upstream lint allowances.

• Built the native CLI with the rolldown feature, the global CLI, and the Windows trampoline.

• New CLI snapshots passed in record and compare modes for both local and global entrypoints. They create a genuinely case-sensitive .bin directory and cover nested planning, direct exec, a later uppercase shim, and cache replay.

• Rust formatting and git diff --check passed.

Local validation ran on Windows ARM64 with Node 24.20.0. CLI integration used the branch's compiled Rust binaries with the published 0.3.2 JavaScript artifacts; a full pnpm build and the full repository test suite were not run.

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[github-actions]

CLI artifact sizes (201da27)

Final release artifacts built by the canonical build-upstream and build-windows-cli actions.
The dist rows use the Linux build. The core total excludes .node files to match the release artifact.

Artifact	Format	Base	PR	Change
packages/cli/dist	Directory total	2.15 MiB	2.15 MiB	0 B (0.00%)
packages/core/dist	Directory total	3.95 MiB	3.95 MiB	0 B (0.00%)
Combined package dist	Directory total	6.09 MiB	6.09 MiB	0 B (0.00%)
vp (Linux x64)	Binary	11.18 MiB	11.18 MiB	0 B (0.00%)
vp (Linux x64)	gzip -9	4.84 MiB	4.84 MiB	-1 B (-0.00%)
NAPI (Linux x64)	Binary	32.01 MiB	32.01 MiB	0 B (0.00%)
NAPI (Linux x64)	gzip -9	12.69 MiB	12.69 MiB	-2 B (-0.00%)
vp (macOS ARM64)	Binary	8.33 MiB	8.33 MiB	0 B (0.00%)
vp (macOS ARM64)	gzip -9	4.22 MiB	4.22 MiB	-6 B (-0.00%)
NAPI (macOS ARM64)	Binary	39.64 MiB	39.64 MiB	0 B (0.00%)
NAPI (macOS ARM64)	gzip -9	17.01 MiB	17.01 MiB	+1 B (+0.00%)
vp (Windows x64)	Binary	9.06 MiB	9.04 MiB	-26.50 KiB (-0.29%)
vp (Windows x64)	gzip -9	3.96 MiB	3.95 MiB	-11.51 KiB (-0.28%)
NAPI (Windows x64)	Binary	26.98 MiB	26.95 MiB	-26.00 KiB (-0.09%)
NAPI (Windows x64)	gzip -9	10.80 MiB	10.79 MiB	-14.65 KiB (-0.13%)
Trampoline (Windows x64)	Binary	13.50 KiB	13.50 KiB	0 B (0.00%)
Trampoline (Windows x64)	gzip -9	7.03 KiB	7.03 KiB	0 B (0.00%)
Installer (Windows x64)	Binary	4.53 MiB	4.53 MiB	0 B (0.00%)
Installer (Windows x64)	gzip -9	2.12 MiB	2.12 MiB	+2 B (+0.00%)