feat: replace lint/fmt with unified vp check and add pre-commit hooks

[fengmk2]

Summary

• Replace separate lint, lint:fix, fmt, fmt:check scripts with unified vp check / vp check --fix
• Add husky + lint-staged for pre-commit hooks running vp check --fix on staged .ts files
• Upgrade vite-plus from 0.0.0-b1666489.20260220-0254 to 0.0.0-g61d318d2.20260227-0939
• Consolidate CI "Format check" and "Lint check" steps into a single "Check" step
• Update CLAUDE.md command documentation

Test plan

• vp run check passes (only warnings, no errors)
• vp run test — all 30 tests pass
• vp run build — builds successfully
• CI passes on all platforms

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR consolidates formatting/linting into a single vp check workflow, adds pre-commit automation, and updates CI/docs to match the new developer experience.

Changes:

• Replace separate lint/fmt scripts with unified check / check:fix.
• Add Husky + lint-staged to run checks on pre-commit.
• Update CI to run a single “Check” step and bump vite-plus (and related lockfile deps).

Reviewed changes

Copilot reviewed 8 out of 10 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/utils.ts	Standardizes error stringification in command execution failure logging.
src/run-install.ts	Standardizes error stringification in install failure handling.
src/index.ts	Standardizes error stringification when printing vp version fails.
src/cache-save.ts	Standardizes error stringification on cache save failure warning.
package.json	Introduces check/check:fix, adds Husky/lint-staged config and prepare hook.
CLAUDE.md	Updates documented commands to use check and refreshes commit guidance.
.husky/pre-commit	Adds a pre-commit hook to run lint-staged.
.github/workflows/test.yml	Consolidates CI lint/format into a single vp run check step; adds merge_group trigger.
pnpm-lock.yaml	Locks new dev dependencies and the upgraded vite-plus version.

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

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[Copilot]

The commands list uses vp run check:fix, but the “Important” line below instructs vp check --fix. This inconsistency can confuse contributors; consider aligning on one invocation (e.g., vp run check:fix) throughout this doc.

Suggested change

	**Important:** Always run `vp check --fix` and `vp run build` before committing - the `dist/index.mjs` must be committed.
	**Important:** Always run `vp run check:fix` and `vp run build` before committing - the `dist/index.mjs` must be committed.

[Copilot]

Pull request overview

Copilot reviewed 8 out of 10 changed files in this pull request and generated 1 comment.

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

---

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[Copilot]

lint-staged appends the matched file paths to the command it runs. With the current config ("*": "vp check --fix"), the hook will run vp check --fix <all-staged-files> (including non-TS files), which can fail if vp check doesn’t accept positional file args and also doesn’t match the PR description of only running on staged .ts files. Consider scoping the pattern to TS (e.g. "*.ts": ... / "*.{ts,tsx}": ...) and/or wrapping the command so lint-staged doesn’t append filenames if vp check is repo-wide.

Suggested change

	"*": "vp check --fix"
	"*.{ts,tsx}": "vp check --fix"