feat: 支持账号导入与强制改密

- 新增账号导入模板下载、导入校验和默认密码重置标记

- 支持管理员重置密码并在登录后强制跳转修改密码

- 管理端与用户中心接入强密码校验和密码重置流程

easyflow-modules/easyflow-module-system/src/test/java/tech/easyflow/system/util/SysPasswordPolicyTest.java

@@ -0,0 +1,20 @@
+package tech.easyflow.system.util;
+
+import org.junit.Assert;
+import org.junit.Test;
+import tech.easyflow.common.web.exceptions.BusinessException;
+
+public class SysPasswordPolicyTest {
+
+    @Test
+    public void shouldAcceptStrongPassword() {
+        Assert.assertTrue(SysPasswordPolicy.isStrongPassword("Abcd1234!"));
+        SysPasswordPolicy.validateStrongPassword("Abcd1234!");
+    }
+
+    @Test(expected = BusinessException.class)
+    public void shouldRejectWeakPassword() {
+        Assert.assertFalse(SysPasswordPolicy.isStrongPassword("123456"));
+        SysPasswordPolicy.validateStrongPassword("123456");
+    }
+}