* feat(connectors): cancel a conversation's queued work and stop its agent, behind experimentalConnectors (B4)
* test(connectors): drop a type assertion from the interrupt test
* fix(connectors): interrupt only a running main-agent turn, never background-only work
* chore(connectors): shorten the interrupt comment
* fix(connectors): fence cancel and prompt keys at transport handoff
* fix(connectors): clear the prompt Claude restores after our cancel, and end a turn our cancel rejected
* fix(connectors): require stronger evidence for cancel cleanup and settlement
* fix(connectors): cancel waits for a published agent's link, keeps cancel headroom in a full backlog, and pastes nothing after an unsettled clear
* fix(connectors): bound cancellation settlement and preserve unresolved lanes
* refactor(connectors): drop the leftover-prompt clear after cancel; keep the rejected-turn end