{
    "action": "tool_call",
    "reasoning": "My earlier draft cited numbers, but no query result backs them in this turn. I'll pull the per-app breakdown from the gold table so the answer is grounded.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT * FROM bedtime_screentime_sleep_debt_by_primary_bedtime_app",
        "purpose": "Per-app breakdown of sleep latency, fatigue, sleep hours and behaviours",
        "source": "gold"
    }
}