Clarify /goal semantics in CLI help

Issue

The /goal help text currently says:

set or view the goal for a long-running task

This conflates goals with task-level success criteria. Tasks have success criteria, constraints, required outputs, and completion conditions; agents and other goal-directed actors can have goals. The current wording also incorrectly implies a one-to-one relationship between a goal and a task, although one goal may motivate multiple tasks and a task may contribute to multiple goals.

Expected wording

set or view the agent’s goal

This is a terminology correction only. The existing thread-scoped persistence and runtime behavior do not need to change.

Patch

A focused one-commit patch updates the command metadata and adds a rendered popup snapshot:

https://github.com/tompassarelli/codex/commit/ca04f63a85c80f0b5867a7a51f8c3c290c4ef651

The upstream repository currently limits pull-request creation to collaborators, so I could not submit the patch as a PR.

Locate the /goal command metadata and the rendered popup snapshot referenced in the issue, then inspect how the CLI help text is generated. Update the wording to “set or view the agent’s goal” without changing persistence or runtime behavior, and verify the rendered help snapshot reflects the terminology correction.