CREATE TABLE lifeos_states (
  user_id TEXT PRIMARY KEY,
  profile_json TEXT NOT NULL DEFAULT '{}',
  memories_json TEXT NOT NULL DEFAULT '[]',
  museum_json TEXT NOT NULL DEFAULT '[]',
  settings_json TEXT NOT NULL DEFAULT '{}',
  system_json TEXT NOT NULL DEFAULT '{}',
  updated_at TEXT NOT NULL
);

CREATE INDEX idx_lifeos_states_updated_at
ON lifeos_states(updated_at);