getSlotKey(); if missing, wait for onSlotRegistered.onBeforeRevealed() → slot reveal(view) → onRevealed().BrixView) notify onAttached()/onDetached(), triggering registerSlots(), onReady(), and onRemoved().Override registerSlots() to add presenter-scoped slots; Brix cleans them up during deactivation.
@Override
protected void registerSlots() {
registerSlot(AppendElementSlot.of("alerts", alertsElement));
}
The presenter guards against duplicate activation. Reveal retries only when the slot becomes available; call reveal() manually if you need to reattach after state changes.