feat(cli): add --quiet to vp check

[RSS1102]

Summary

• add --quiet support to vp check and forward it to the Oxlint phase
• suppress warning diagnostics while preserving the unified check summary and error failures
• document the option and cover warning-only, error, and help output with CLI snapshots

Closes #2588

Example

With one lint error and one warning, vp check --quiet prints only the error diagnostic while preserving both counts in the unified summary:

pass: All 3 files are correctly formatted (<duration>, <n> threads)
error: Lint issues found
× eslint(no-eval): eval can be harmful.
   ╭─[src/index.js:2:3]
 1 │ function hello() {
 2 │   eval("code");
   ·   ────
 3 │   console.log("warning");
   ╰────
  help: Avoid eval().

Found 1 error and 1 warning in 2 files (<duration>, <n> threads)

The no-console warning diagnostic is omitted, matching vp lint --quiet, while the warning remains visible in the aggregate count.

Testing

• cargo test -p vite-plus-cli check::analysis::tests
• cargo test -p vp_cli_snapshots -- check_lint_warn::check_lint_warn
• cargo test -p vp_cli_snapshots -- check_lint_fail::check_lint_fail
• cargo test -p vp_cli_snapshots -- command_check_help::command_check_help
• cargo clippy -p vite-plus-cli --all-targets --no-default-features -- --deny warnings
• vp fmt --check packages/cli/src/help.ts docs/guide/check.md
• cargo fmt --all -- --check

[netlify]

✅ Deploy Preview for viteplus-preview canceled.

Name	Link
🔨 Latest commit	90ea3b7
🔍 Latest deploy log	https://app.netlify.com/projects/viteplus-preview/deploys/6a98db395ff2890008b0e9e5

[fengmk2]

Why is it necessary to add this environment variable? Is there a reason that causes the tests to be unstable?

[fengmk2]

@RSS1102 Thanks!