-- Minimal users table for docv authentication (zone 1, IMPL_01).
-- Compatible with PostgreSQL 13+ (gen_random_uuid).

CREATE TABLE IF NOT EXISTS users (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    email TEXT NOT NULL UNIQUE,
    password_hash TEXT NOT NULL,
    name TEXT,
    phone TEXT,
    preferences JSONB,
    created_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE INDEX IF NOT EXISTS idx_users_email ON users (email);