{
    "action": "tool_call",
    "reasoning": "My earlier draft cited column counts and date ranges, but I have no tool results for them in this turn's evidence. I'll check the overview metadata first, then verify the parsed date ranges.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT table_name, row_count, column_count FROM analytics.table_overview ORDER BY row_count DESC",
        "purpose": "Verify row and column counts per table",
        "source": "raw"
    }
}