ALTER TABLE agent_install_links ADD COLUMN expires_at TEXT;
ALTER TABLE agent_install_links ADD COLUMN consumed_at TEXT;
ALTER TABLE agent_install_links ADD COLUMN consumed_token_hash TEXT;
UPDATE agent_install_links SET expires_at = strftime('%Y-%m-%dT%H:%M:%fZ', 'now', '+1 day') WHERE expires_at IS NULL;
CREATE TABLE agent_token_rotations (
  agent_id TEXT PRIMARY KEY REFERENCES agents(id) ON DELETE CASCADE,
  request_id TEXT NOT NULL UNIQUE,
  created_at TEXT NOT NULL,
  expires_at TEXT NOT NULL,
  completed_at TEXT,
  previous_token_hash TEXT,
  next_token_hash TEXT
);
CREATE TABLE agent_credential_receipts (
  agent_id TEXT PRIMARY KEY REFERENCES agents(id) ON DELETE CASCADE,
  request_id TEXT NOT NULL,
  token_hash TEXT NOT NULL,
  completed_at TEXT NOT NULL
);