docs: trim generated prose

docs/core-data-structures/subagent.md

@@ -89,7 +89,7 @@ interface SubagentProvider {
 }
 ```
 
-The service (`ctx.subagents`) emits `subagent/start` only after `run.started` fulfills and emits the paired `subagent/end` when that started run settles (see the [events catalog](../cordis-catalog/events.md)); a pre-publication readiness rejection emits neither event. For an in-process provider, a start listener can therefore resolve the live child with `ctx.agents.get(info.id)`; a remote provider need not publish into the local registry. `subagent/end` carries `lastAssistantMessage` (the child's final `output`) on the settle path, so an observer sees WHAT the subagent produced without holding the run (absent when the run rejected at the infrastructure level — no result was produced). These are **observe-only** events: both are plain `emit`s, so a subscriber observes but cannot change the run. Result settlement is observed immediately even while readiness is pending, then its cloned end payload is buffered until start has been announced; this prevents an early rejection from becoming unhandled while preserving start-before-end order and protecting the caller's result from listener mutation. Both emits contain a thrown listener **per listener** (logged, never propagated): one bad subscriber can neither strand a live run, surface as an unhandled rejection on the detached settle hook, nor starve the listeners registered after it.
+`subagent/start` follows successful readiness; `subagent/end` follows settlement of that announced run. Readiness rejection emits neither. In-process children can be resolved through the agent registry, while remote providers may have no local agent. End events carry cloned `lastAssistantMessage` on successful settlement and omit it on infrastructure failure. Both events are observe-only, preserve start-before-end order, and contain subscriber exceptions independently. See the [events catalog](../cordis-catalog/events.md) for signatures.
 
 ## In-process backends: depth and seed