refactor(web): consume owner remote events directly

packages/host/apiproxy/src/api/llm.ts

@@ -4,7 +4,8 @@
  * (which providers CAN be configured, and where their settings live) with the
  * live route registry; `llm.models` is the session-independent model catalog
  * (the same groups as `session.models`, without a per-session selection).
- * Both invalidate on the `host/models-changed` frame.
+ * Clients invalidate from the forwarded `llm/adapters-updated` and
+ * `settings/document-updated` owner events.
  */
 
 import type { RpcRequest, RpcResponse } from './rpc.ts'