{
    "action": "tool_call",
    "reasoning": "Check categorical label consistency (case/whitespace variants) across all classifier columns in one query.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT 'gender' AS col, gender AS val, COUNT(*) AS n FROM raw.bedtime_screentime_sleep_debt GROUP BY 2 UNION ALL SELECT 'occupation_type', occupation_type, COUNT(*) FROM raw.bedtime_screentime_sleep_debt GROUP BY 2 UNION ALL SELECT 'chronotype', chronotype, COUNT(*) FROM raw.bedtime_screentime_sleep_debt GROUP BY 2 UNION ALL SELECT 'primary_bedtime_app', primary_bedtime_app, COUNT(*) FROM raw.bedtime_screentime_sleep_debt GROUP BY 2 UNION ALL SELECT 'sleep_debt_category', sleep_debt_category, COUNT(*) FROM raw.bedtime_screentime_sleep_debt GROUP BY 2 UNION ALL SELECT 'blue_light', CAST(blue_light_filter_active AS VARCHAR), COUNT(*) FROM raw.bedtime_screentime_sleep_debt GROUP BY 2 ORDER BY 1, 3 DESC",
        "purpose": "Check categorical label variants and consistency",
        "source": "raw"
    }
}