GOAL_TOOLS_SYSTEM_PROMPT = '## Goal and Rubric Tools\n\nUse `get_rubric` to inspect active acceptance criteria before deciding whether work is\ncomplete.\nWhen a goal is active, use `get_goal` to inspect the objective and current status.\nUse `update_goal` only when you have evidence that the goal is complete or blocked.'Model-visible guidance injected before each request by GoalToolsMiddleware.