mono - chore: upgrade vitest to 4.1.10 and migrate biome config

[jaredwray]

Please check if the PR fulfills these requirements

• Followed the Contributing guidelines and Code of Conduct
• Tests for the changes have been added (for bug fixes/features) with 100% code coverage.

No new tests are required — this is dev-tooling maintenance with no behavioral change. The existing suite continues to pass at 100% coverage.

What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

Chore — catch-up dev-tooling maintenance. No runtime or public-API changes.

Changes

vitest 4.1.9 → 4.1.10 (dev dependencies, root package.json)

• vitest, @vitest/coverage-v8, @vitest/spy
• Patch release; both 4.1.10 and its siblings are past the 48h minimumReleaseAge window (published 2026-07-06).

biome migrate (config only)

• biome.json and packages/benchmark/biome.json: replace the deprecated linter.rules.recommended: true with linter.rules.preset: "recommended" (the form Biome 2.5 expects — clears the deprecation left by the Biome 2.5 upgrade in mono - chore: upgrade code quality dependencies #1669).
• packages/benchmark/biome.json: add "root": false, required for nested configs in Biome 2.x.
• Behavior-neutral: verified identical lint findings before and after the migration.

Verification

• pnpm build — all packages build.
• pnpm -r --no-bail test — 8 packages fully green; the only failures are the 3 pre-existing, environment-only cases (external mockhttp.org:8080 egress; two file-entry-cache tests that rely on non-root file-permission enforcement), all unrelated to this change and green on CI.
• biome check — migrated config validated; findings unchanged vs. main.

---

Generated by Claude Code

[gemini-code-assist]

Code Review

This pull request updates the Biome configuration files to use the "preset": "recommended" linter rule and marks the benchmark package's Biome configuration as non-root. Additionally, it upgrades Vitest and its related coverage and spy packages from version 4.1.9 to 4.1.10, along with corresponding lockfile updates. There are no review comments, so I have no feedback to provide.

[socket-security]

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

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	@​vitest/​spy@​4.1.10
	vitest@​4.1.10
	@​vitest/​coverage-v8@​4.1.10

View full report

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (c21df29) to head (dc3a3ae).

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #1683   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           29        29           
  Lines         3504      3504           
  Branches       795       795           
=========================================
  Hits          3504      3504           

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