Domain events

Every state change publishes a frozen dataclass on the in-process EventBus. Subscribers run concurrently and failures in one handler never block the rest.

Event	Fired by	Notes
TicketCreated	ticket service	includes user, project
TicketAssigned	assign handler	assignee_id=None means cleared
TicketTagged	tag handler	tags_added + tags_removed
TicketPriorityChanged	priority handler
TicketClosed	close handler	reason ∈ manual / autoclose / resolved
TicketReopened	reopen handler
TicketRoutedToTeam	teams dispatcher	includes matched_rules
SlaWarned	SLA task	one-shot per ticket
SlaBreached	SLA task
MessageReceived / MessageSent	message service
UserBlocked / UserUnblocked / UserRegistered / UserLanguageChanged	user flows
BroadcastStarted/Paused/Resumed/Cancelled/Finished	broadcast service
ProjectCreated / ProjectDeleted	project admin
PluginLoaded / PluginFailed / PluginUnloaded	plugin loader
MacroUsed	macros service
KbArticleShown / KbArticleHelpful / KbArticleDismissed	KB gate
CsatPrompted / CsatReceived / CsatCommented	CSAT service

Subscribing

Via plugin subscribe_events() (recommended) or directly:

bus: EventBus = container.resolve(EventBus)

@bus.on(TicketCreated)
async def react(event: TicketCreated):
    ...