refactor(login): 使用 wd-form 官方表单校验替换手动校验，优化错误提示展示方式

- 使用 wd-form + wd-form-item 配合 formSchema 实现表单校验
- 校验错误改为内联提示(error-type=message)，不再弹窗
- 修复 wd-form-item 水平布局导致错误提示与输入框挤在一起的样式问题
- 为 wd-form-item 添加 layout=vertical 并将错误提示强制显示在输入框下方
- 移除 manifest.json 中不兼容小程序编译的 darkMode/themeLocation 配置
- 移除 pages.json 中小程序不支持的 animationType/animationDuration/customize/overlay 字段

src/pages.json

@@ -7,13 +7,10 @@
     "backgroundTextStyle": "@bgTxtStyle",
     "backgroundColorTop": "@bgColorTop",
     "backgroundColorBottom": "@bgColorBottom",
-    "enablePullDownRefresh": false,
-    "onReachBottomDistance": 50,
-    "animationType": "pop-in",
-    "animationDuration": 300
+    "enablePullDownRefresh": false
   },
   "pages": [
-    // GENERATED BY UNI-PAGES, PLATFORM: H5
+    // GENERATED BY UNI-PAGES, PLATFORM: H5 || MP-WEIXIN
     {
       "path": "pages/index/index",
       "type": "home",
@@ -215,15 +212,13 @@
   "subPackages": [],
   "tabBar": {
     "custom": true,
-    "customize": true,
-    "overlay": true,
     "height": "0",
     "color": "@tabColor",
     "selectedColor": "@tabSelectedColor",
     "backgroundColor": "@tabBgColor",
     "borderStyle": "@tabBorderStyle",
     "list": [
-      // GENERATED BY UNI-PAGES, PLATFORM: H5
+      // GENERATED BY UNI-PAGES, PLATFORM: H5 || MP-WEIXIN
       {
         "pagePath": "pages/index/index"
       },