Provision Neon Postgres + schema + migrations

[quinn-dougherty]

Description

Foundation for every form and admin view. Provision Neon via Vercel Marketplace, pick an ORM, write migrations for the schema in PLAYBOOK.md §2.

Requirements

• Install Neon from Vercel Marketplace — auto-provisions `DATABASE_URL`.
• Pick ORM: Drizzle or Prisma. Don't re-litigate. Playbook suggests Drizzle.
• Initial tables (see PLAYBOOK.md §2 for full columns):
  • `curators`, `curator_apps`
  • `submissions`, `submission_reviews`
  • `registrants`
  • `schedule_slots`
  • `audit_log`
• All tables: `created_at`, `updated_at`; soft-delete only if needed.
• Unique index on `registrants.stripe_session_id` (idempotency for webhook).
• Confirm Neon PITR backups are enabled.

Dependencies

• Blocks every form + admin issue (Build /submit form (papers / repos / breakout sessions) #1, Build /curate form (curator application) #2, Build /curators public profiles page #3, Build /register + Stripe Checkout + webhook #4, admin).