Phase 0 foundation tooling complete

Milestone: A working monorepo that builds, lints, and runs locally. The skeleton that every future phase lives inside. Learning payoff: Turborepo, pnpm workspaces, TypeScript strict mode, project conventions. Completed: May 2026

Phase 0 Exit Criteria: ✅ All met.

• pnpm turbo build completes without errors or warnings
• pnpm turbo dev starts apps/web at localhost:3000
• pnpm turbo lint and pnpm turbo typecheck pass across all 5 packages
• Dependency boundary enforcement active — packages/* → apps/* blocked by ESLint
• Deployed to Vercel at https://sidekick-six-bay.vercel.app

Implementation notes:

• Next.js 16 was current at time of implementation (plan said 15 — updated in place)
• pnpm 11.0.8 via Corepack (plan said pnpm@8 — Corepack handles version enforcement)
• apps/web/eslint.config.mjs generated by scaffolder was removed — root eslint.config.js handles all packages
• apps/web/pnpm-lock.yaml generated by scaffolder was removed — root lockfile manages the workspace
• packages/features-registry not packages/feature-registry — corrected after initial scaffold
• turbo.json build.env array added to prevent stale Vercel cache when env vars change
• Repo made public intentionally — see architecture handover §21