{
    "action": "tool_call",
    "reasoning": "Start with the gold table comparing sleep outcomes by blue light filter use, since it is pre-aggregated and directly addresses the filter-vs-outcomes question.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT * FROM bedtime_screentime_sleep_debt_by_blue_light_filter_active",
        "purpose": "Compare sleep outcomes with vs without blue light filter",
        "source": "gold"
    }
}