chore: Fix types in tests 32/N.

src/agents/session-tool-result-guard.tool-result-persist-hook.e2e.test.ts

@@ -34,12 +34,13 @@ function writeTempPlugin(params: { dir: string; id: string; body: string }): str
 }
 
 function appendToolCallAndResult(sm: ReturnType<typeof SessionManager.inMemory>) {
-  sm.appendMessage({
+  const appendMessage = sm.appendMessage.bind(sm) as unknown as (message: AgentMessage) => void;
+  appendMessage({
     role: "assistant",
     content: [{ type: "toolCall", id: "call_1", name: "read", arguments: {} }],
   } as AgentMessage);
 
-  sm.appendMessage({
+  appendMessage({
     role: "toolResult",
     toolCallId: "call_1",
     isError: false,