test(scripts): align naming with Node — rename test:coverage to test:unit:coverage

[PierreBrisorgueil]

Context

Devkit Node just split its test scripts into a clear 3-tier scheme : test:unit:coverage / test:integration:coverage / test:e2e (PRs #3558, #3559, #3561 — May 2026). Vue currently has :

• test:unit — vitest run
• test:coverage — vitest run --coverage
• test:e2e — playwright

Vue does NOT have an "integration" tier, and test:coverage runs the same set as test:unit. The naming is asymmetric with Node, which makes context-switching between stacks confusing.

Proposal

Cosmetic rename for cross-stack consistency :

  "test": "npm run test:unit",
  "test:unit": "vitest run",
+ "test:unit:coverage": "vitest run --coverage",
- "test:coverage": "vitest run --coverage",
  "test:e2e": "npx playwright test --config playwright.config.js",

Optional : keep test:coverage as a legacy alias for test:unit:coverage so existing CI / local muscle memory still works during transition.

Why NOT touch the architecture

• Vitest already runs workers natively (no --runInBand problem like Jest had on Node)
• No shared MongoDB → no per-worker DB isolation needed
• Vue CI master runtime is already 2-3 min, not a bottleneck
• The Vue-specific memory leak was already fixed via pool: 'forks' + restoreMocks (cf. feedback_subagent_models)

This is purely a naming alignment with Node, not a port of the Jest worker / matrix split work.

Effort

• 5 min : edit package.json
• Update .github/workflows/CI.yml if it references test:coverage directly
• Update README.md test section with the new script name(s)
• 1 PR

Low priority — bundle with the next stack housekeeping pass.