✨ 开票合计反算、配载承运商乙方交集与临时合同结算校验

开票按合计金额/税率反算不含税单价（6位小数）；配载按子单客户合同甲方匹配后取承运商乙方交集；临时合同过期不可结算，并修正合同变更编号唯一校验。

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

doc/sql/transport/blade_invoice_application_line_unit_price_scale_20261026.sql

@@ -0,0 +1,17 @@
+-- 开票申请明细：不含税单价按合计金额反算后保留 6 位小数
+SET @schema_name = DATABASE();
+SET @has_unit_price_column = (
+  SELECT COUNT(1)
+  FROM information_schema.columns
+  WHERE table_schema = @schema_name
+    AND table_name = 'blade_invoice_application_line'
+    AND column_name = 'unit_price_no_tax'
+);
+SET @alter_unit_price_sql = IF(
+  @has_unit_price_column > 0,
+  'ALTER TABLE `blade_invoice_application_line` MODIFY COLUMN `unit_price_no_tax` decimal(18,6) DEFAULT NULL COMMENT ''不含税单价''',
+  'SELECT 1'
+);
+PREPARE stmt FROM @alter_unit_price_sql;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;