Root config runs each workspace package as a Vitest project. Adds a
trivial passing test in packages/sim.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
pnpm workspace with apps/web, apps/server, packages/sim, packages/schema
and packages/content, each extending a strict tsconfig.base.json.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>