-- Existing TASK_3 installations only, once before deploying the refined Worker.
-- Fresh schema: use answer_reconcile_work.sql instead; do not run both.
-- MySQL 5.7; no SQL is executed by this delivery.
ALTER TABLE answer_reconcile_work
    ADD COLUMN work_version BIGINT NOT NULL DEFAULT 0,
    ADD COLUMN retry_count INT NOT NULL DEFAULT 0,
    ADD COLUMN pending_report_state VARCHAR(16) NULL;