changelog.d/4820-host-chat-lease-expiry-failure-frees-capacity.md

Rama main · réplica de lectura del repositorio original.

- **A chat turn interrupted by a server restart and later captured as failed now ends as failed and frees its execution slot (#4820).** A restart mid-turn lets the lease expire, which parks the turn for reconciliation. The fix for #4818 settled a captured failure only for turns parked while waiting for their captured output, so a turn parked by the expired lease still held a slot of the server's chat capacity after every deploy. Both cases now settle the same way. Background work keeps its reconciliation hold.