feat: add workbench kafka migration support

docs/IM-群聊业务表设计.sql

@@ -261,25 +261,3 @@ CREATE TABLE IF NOT EXISTS im_group_idempotency (
   UNIQUE INDEX uk_im_group_idempotency_request (user_id, method, route, idempotency_key),
   INDEX idx_im_group_idempotency_created (created_at)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;
-
--- 12. Group outbox events.
--- Transactional bridge for group.membership.updated, group.join_request.created,
--- group.announcement.updated, group.role.updated, group.mute.updated, group.dissolved, etc.
-CREATE TABLE IF NOT EXISTS im_group_events_outbox (
-  id             BIGINT NOT NULL AUTO_INCREMENT,
-  event_id       VARCHAR(64) NOT NULL,
-  topic          VARCHAR(32) NOT NULL,
-  actor_user_id  BIGINT NOT NULL DEFAULT 0,
-  event_type     VARCHAR(64) NOT NULL,
-  payload        JSON,
-  status         VARCHAR(16) NOT NULL DEFAULT 'pending',
-  attempts       INT NOT NULL DEFAULT 0,
-  next_retry_at  DATETIME(3),
-  delivered_at   DATETIME(3),
-  created_at     DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
-  updated_at     DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) ON UPDATE CURRENT_TIMESTAMP(3),
-  PRIMARY KEY (id),
-  UNIQUE INDEX uk_im_group_events_outbox_event (event_id),
-  INDEX idx_im_group_events_outbox_pending (status, next_retry_at, id),
-  INDEX idx_im_group_events_outbox_topic (topic, id DESC)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;