✨ 结算单用印类型与项目变更调整材料

Co-authored-by: Cursor <cursoragent@cursor.com>

doc/sql/transport/blade_project_change_adjust_attachments_20261109.sql

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+-- 项目变更：调整材料（记录原附件，审批通过后替换并同步到原项目档案项目材料）
+ALTER TABLE `blade_project_change`
+  ADD COLUMN `adjust_attachments_json` longtext CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL COMMENT '调整材料JSON（含原附件快照与调整原因）' AFTER `attachments_json`;

doc/sql/transport/blade_settlement_seal_types_20261109.sql

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+-- 预付结算单、正式结算单（付款/收款）：用印类型（多选，顿号拼接存储：公章、业务章）
+ALTER TABLE `blade_pre_settlement`
+  ADD COLUMN `seal_types` varchar(64) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '用印类型（多选，顿号拼接：公章、业务章）' AFTER `transport_type`;
+
+ALTER TABLE `blade_formal_settlement`
+  ADD COLUMN `seal_types` varchar(64) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '用印类型（多选，顿号拼接：公章、业务章）' AFTER `transport_type`;