ALTER TABLE reports
  ADD COLUMN action_type VARCHAR(30) NOT NULL DEFAULT '' AFTER status,
  ADD COLUMN handle_remark VARCHAR(1000) NOT NULL DEFAULT '' AFTER action_type;

CREATE INDEX idx_reports_target ON reports(target_type, target_id, created_at);

ALTER TABLE im_messages
  ADD COLUMN admin_removed_at DATETIME(3) NULL AFTER recalled_at,
  ADD COLUMN admin_removed_by BIGINT UNSIGNED NULL AFTER admin_removed_at,
  ADD COLUMN admin_remove_reason VARCHAR(500) NOT NULL DEFAULT '' AFTER admin_removed_by;

INSERT INTO admin_permissions(permission_code,permission_name,permission_group,sort_order)
VALUES('messages:manage','下架及恢复违规聊天消息','content',33)
ON DUPLICATE KEY UPDATE permission_name=VALUES(permission_name),permission_group=VALUES(permission_group),sort_order=VALUES(sort_order);

INSERT IGNORE INTO admin_role_permissions(role_id,permission_code)
SELECT id,'messages:manage' FROM admin_roles WHERE role_code='super_admin';