{
    "action": "tool_call",
    "reasoning": "My earlier draft rested on a 15-row sample and admitted it could not show the real category mix. I'll query the pre-aggregated gold table by sleep_debt_category to get full-table figures. Its columns aren't listed on the card, so I'll select everything.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT * FROM bedtime_screentime_sleep_debt_by_sleep_debt_category",
        "purpose": "Get the full-table breakdown by sleep debt category instead of relying on a 15-row sample",
        "source": "gold"
    }
}