- Add NarrationTrigger(kind, instruction) model to core:router
- Add RouterContextBuilder.buildNarrationContext: minimal ContextPack
(system + workflow status + L2 + trigger instruction); excludes
conversationHistory and L3 recalled memory
- Add RouterFacade.narrate: emits RouterNarrationEvent with content,
latencyMs, tokensUsed; skips event on blank inference; never writes
ChatTurnEvent or l3MemoryStore.store
- Add RouterNarrationTest covering all acceptance criteria
- Add narrate default to RouterContextBuilder interface so existing
anonymous test stubs compile without a stub override
kami
38b007a6cd