add a changeset

Author: threepointone

.changeset/empty-eels-unite.md

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+---
+"agents": patch
+---
+
+Add readonly connection support to agents
+
+Introduces readonly connections to restrict certain WebSocket clients from modifying agent state while allowing state updates and RPC calls. Adds server-side methods for managing readonly status, persists status in SQL for hibernation, and client-side error handling via onStateUpdateError. Updates documentation and relevant types, client, and React hook implementations.