CREATE TABLE IF NOT EXISTS api_keys (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  key_hash TEXT NOT NULL UNIQUE,
  name TEXT NOT NULL,
  role TEXT NOT NULL DEFAULT 'ingest',
  allowed_events TEXT NOT NULL DEFAULT '[]',
  rate_limit INTEGER DEFAULT 100,
  last_used_at INTEGER,
  created_at INTEGER NOT NULL DEFAULT (unixepoch() * 1000)
);