CREATE TABLE IF NOT EXISTS users (
  id UUID PRIMARY KEY,
  email TEXT UNIQUE NOT NULL,
  password_hash TEXT NOT NULL,
  email_verified BOOLEAN NOT NULL DEFAULT FALSE,
  created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

CREATE TABLE IF NOT EXISTS refresh_sessions (
  id UUID PRIMARY KEY,
  user_id UUID NOT NULL REFERENCES users(id),
  token_hash TEXT NOT NULL,
  expires_at TIMESTAMPTZ NOT NULL,
  created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
);