feat: remove old password requirement, fix user info display, and add password change reminder on home page

inventory-web/src/views/dashboard/index.vue

@@ -36,6 +36,11 @@
             借库申请
           </el-button>
         </div>
+
+        <!-- 修改密码温馨提示 -->
+        <div class="password-tip">
+          💡 提示：为了您的账号安全，请点击右上角<strong>个人头像</strong>修改默认登录密码。
+        </div>
       </div>
     </el-card>
 
@@ -415,6 +420,22 @@ const handleNav = (path: string) => {
   flex-wrap: wrap; /* 防止屏幕过窄时按钮挤压 */
 }
 
+/* 修改密码温馨提示 */
+.password-tip {
+  text-align: center;
+  font-size: 13px;
+  color: #909399;
+  margin-top: 20px;
+  padding: 10px 16px;
+  background-color: #f4f4f5;
+  border-radius: 6px;
+  line-height: 1.6;
+}
+
+.password-tip strong {
+  color: #409eff;
+}
+
 /* 给按钮加一点悬浮效果 */
 .el-button {
   transition: all 0.3s;