test(hooks): remove unsafe test assertions

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/hooks/task-resume-info/index.test.ts

@@ -19,7 +19,7 @@ describe("createTaskResumeInfoHook", () => {
         const input = createInput("task")
         const output = {
           title: "delegate_task",
-          output: undefined as unknown as string,
+          output: testCoerce<string>(undefined),
           metadata: {},
         }