Add Neon Postgres as the relational tier of the DB stack — Neon Postgres is added as the family's relational database. Free plan, no card, scale-to-zero, branching for previews. Sits alongside Firestore (documents/auth), Turso libSQL (warm cache), and JSONL canonical (archive) — the 4-tier DB stack is now picked-by-shape.
DB admin — console-only, no desktop DB tool — Every database in the family is administered through its vendor's browser console (Firebase Console, Neon Console) or its first-party CLI (Turso CLI, libSQL CLI). NO desktop DB tool — Drizzle Studio / Outerbase / Beekeeper Studio / TablePlus all REJECTED. Zero install footprint, every team member can access via browser, no per-user license.