CREATE TABLE logs (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    ts INTEGER NOT NULL,
    ts_nanos INTEGER NOT NULL,
    level TEXT NOT NULL,
    target TEXT NOT NULL,
    message TEXT,
    fields_json TEXT NOT NULL,
    module_path TEXT,
    file TEXT,
    line INTEGER
);

CREATE INDEX idx_logs_ts ON logs(ts DESC, ts_nanos DESC, id DESC);