BUILDANDRUN.md — developer onboarding guide covering prerequisites,
quick start, CLI commands, scoped package execution, service URLs,
Docker production build, Tauri desktop build, and verification steps.
NEXTSTEP.md — comprehensive assessment of project state across all
6 phases, identifying what is solid vs placeholder, with prioritized
next steps: write tests, wire frontend to API, Prisma migrations,
finish calendar views, wire sync engine, code splitting, i18n.
