## Summary
Add Vue Testing Library (VTL) infrastructure and pilot-migrate
ComfyQueueButton.test.ts as Phase 0 of an incremental VTL adoption.
## Changes
- **What**: Install `@testing-library/vue`,
`@testing-library/user-event`, `@testing-library/jest-dom`, and
`eslint-plugin-testing-library`. Configure jest-dom matchers globally
via `vitest.setup.ts` and `tsconfig.json`. Create shared render wrapper
at `src/utils/test-utils.ts` (pre-configures PrimeVue, Pinia, i18n).
Migrate `ComfyQueueButton.test.ts` from `@vue/test-utils` to VTL. Add
warn-level `testing-library/*` ESLint rules for test files.
- **Dependencies**: `@testing-library/vue`,
`@testing-library/user-event`, `@testing-library/jest-dom`,
`eslint-plugin-testing-library`
## Review Focus
- `src/utils/test-utils.ts` — shared render wrapper typing approach
(uses `ComponentMountingOptions` from VTU since VTL's `RenderOptions`
requires a generic parameter)
- ESLint rules are all set to `warn` during migration to avoid breaking
existing VTU tests
- VTL coexists with VTU — no existing tests are broken
┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-10319-test-add-Vue-Testing-Library-infrastructure-and-pilot-migration-3286d73d3650812793ccd8a839550a04)
by [Unito](https://www.unito.io)
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Co-authored-by: Amp <amp@ampcode.com>
Co-authored-by: GitHub Action <action@github.com>