Bug on codex-cli/tests/apply-patch.test.ts L328

What version of Codex is running?

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Which model were you using?

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What platform is your computer?

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What steps can reproduce the bug?

Seems like the test code of codex-cli/tests/apply-patch.test.ts#L328 should've initialized with {"old.txt": "old"} when calling createInMemoryFS({})

for example, the code should've updated like this:

test("apply_commit correctly performs move / rename operations", () => {
  const commit = {
    changes: {
      "old.txt": {
        type: ActionType.UPDATE,
        old_content: "old",
        new_content: "new",
        move_path: "new.txt",
      },
    },
  };

  // PATCH
  const { writeFn, removeFn, writes, removals } = createInMemoryFS({"old.txt": "old"});

  apply_commit(commit, writeFn, removeFn);

  expect(writes).toEqual({ "new.txt": "new" });
  expect(removals).toEqual(["old.txt"]);
});
````

Without this, It'll not pass the test.

### What is the expected behavior?

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### What do you see instead?

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### Additional information

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