Support Vitest-based unit and UI test runner, including quick start, configuration, UI testing, coverage, device networking, support matrix, and migration notes.

Can still choose Karma based options if desired (jasmine, mocha, and qunit).

• ns test init prompts with all four frameworks with vitest listed first as the recommended default, and --framework jasmine|mocha|qunit works exactly as before: same karma.conf.js template, same pinned Karma dependency set, same tests/ scaffolding. The only difference is a deprecation note in the init output pointing at vitest.
  • ns test ios|android routes by detection: if the project has a vitest.config.*, it runs Vitest; otherwise it falls through to the untouched Karma server path (with a deprecation warning). So existing Karma projects keep working with zero changes, per the one-minor-cycle deprecation window you chose.