class_name EventBus
extends RefCounted
## Instance-based event bus (ADR-0005 spirit). Owned by ShiftCoordinator and
## passed to subsystems that need to notify observers. Subsystems emit only if
## a bus is assigned, so headless tests never depend on global state.

signal incident_recorded(incident: Dictionary)
signal player_action(action: Dictionary)
signal escalation_changed(payload: Dictionary)
signal radio_call(call: Dictionary)
signal responder_arrived(responder: Dictionary)
signal npc_state_changed(payload: Dictionary)
signal shift_state_changed(payload: Dictionary)
signal reputation_changed(payload: Dictionary)
signal crowd_changed(payload: Dictionary)
signal access_decided(payload: Dictionary)
signal shift_review_ready(review: Dictionary)