test: disable vitest watch mode so nx test exits

[pubuzhixing8]

Summary

nx run-many -t=test hangs instead of finishing. The @nx/vitest plugin generates a test target whose command is the bare vitest (not vitest run), and Nx 22 runs it through a pseudo-terminal. Vitest 4 sees an interactive TTY with no CI env var, so it defaults to watch mode: the suite passes, then the process sits there waiting for file changes and Nx reports Executing 1/1 remaining tasks... forever.

This is easy to miss because cached projects are unaffected — only the first project that misses the cache hangs.

This PR sets watch: false in the vitest config of all four projects that have tests:

• apps/web/vite.config.ts
• packages/drawnix/vite.config.ts
• packages/react-board/vite.config.ts
• packages/react-text/vite.config.ts

Watch mode is still available on demand via nx test <project> --watch.

Related Issue

N/A

Validation

• Applicable checks pass: lint, format check, tests, and build
• Relevant E2E and manual tests are complete or not applicable

Evidence:

Before — nx run-many -t=test never exits:

   →  Executing 1/1 remaining tasks...
   ⠴  nx run web:test
   ✔  3/3 succeeded [3 read from cache]

After — npx nx run-many -t=test --skip-nx-cache exits cleanly:

 Test Files  9 passed (9)      # packages/drawnix
      Tests  26 passed (26)

 Test Files  1 passed (1)      # apps/web
      Tests  1 passed (1)

 NX   Successfully ran target test for 4 projects

npm run lint and npm run format:check both pass.

AI Assistance

Did you use AI tools to generate or substantially modify code, tests, or documentation in this pull request?

• No
• Yes

If yes:

• Tool/model: Claude Code / Opus 5

• AI-assisted work: Root-cause analysis of the hanging test target, the watch: false change in the four vite configs, and this description.

• My review and validation: Reviewed each config change and confirmed the full test run completes with the cache disabled.

• I reviewed and understand the AI-assisted changes and can explain and maintain them

Checklist

• The title and description are in English, and the change is focused
• I reviewed and understand every submitted change
• Tests, documentation, and translations were updated when needed

🤖 Generated with Claude Code

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[nightt5879]

LGTM! The --watch option looks useful for local development.