CREATE TABLE IF NOT EXISTS site_config (
  key TEXT PRIMARY KEY,
  value TEXT,
  updated_at TIMESTAMPTZ DEFAULT NOW()
);
ALTER TABLE site_config ENABLE ROW LEVEL SECURITY;
CREATE POLICY "read_all" ON site_config FOR SELECT USING (true);
CREATE POLICY "admin_write" ON site_config FOR ALL
  USING (auth.email() = 'bankkythirddy@gmail.com');