feat: 增加审批步骤发起人部门限制

- 增加配置期与提审期合法审批账号校验

- 冻结发起人部门并统一待办与办理权限判断

- 增加兼容迁移、前端联动和自动化测试

easyflow-starter/easyflow-starter-all/src/main/resources/db/migration/mysql/V40__mysql_approval_applicant_dept_restriction.sql

@@ -0,0 +1,18 @@
+SET NAMES utf8mb4;
+
+ALTER TABLE `tb_approval_flow_step`
+    ADD COLUMN `restrict_to_applicant_dept` TINYINT NOT NULL DEFAULT 0
+        COMMENT '是否限定发起人直属部门' AFTER `assignee_target_name`;
+
+ALTER TABLE `tb_approval_instance`
+    ADD COLUMN `applicant_dept_id` BIGINT UNSIGNED NULL
+        COMMENT '提交时申请人直属部门ID' AFTER `applicant_id`,
+    ADD COLUMN `applicant_dept_name` VARCHAR(128) NULL
+        COMMENT '提交时申请人直属部门名称' AFTER `applicant_dept_id`;
+
+ALTER TABLE `tb_approval_task`
+    ADD COLUMN `required_dept_id` BIGINT UNSIGNED NULL
+        COMMENT '限定直属部门ID' AFTER `assignee_target_name`;
+
+CREATE INDEX `idx_approval_task_required_dept_status`
+    ON `tb_approval_task` (`required_dept_id`, `status`);