Madrid, esta semana.

window.PeaceMasterBridge = {
  /* SUBSCRIPTIONS (Master listens to us) */
  on(event, handler),                       // event ∈ 'event:saved'|'event:going'|'event:dismissed'|'state:change'
  off(event, handler),

  /* COMMANDS (Master calls us) */
  getState(),                               // returns a snapshot of saved events + preferences
  intakeEvent(externalEvent, source),       // source ∈ 'peace_cultural'|'outlook'|'google'|'xlsx'|'manual'
  setFilter(filters),                       // pushes filter state
  openEvent(eventId),

  /* postMessage PROTOCOL */
  //   parent → frame : { type: 'PEACE_CMD', cmd, payload, requestId }
  //   frame  → parent: { type: 'PEACE_EVT', event, payload }
  //   frame  → parent: { type: 'PEACE_ACK', requestId, result }
};