feat: implement miniapp C-group pages with real API calls and design tokens

miniapp/pages/local-eligibility-supplement/local-eligibility-supplement.wxml

@@ -11,7 +11,7 @@
 
   <!-- 已声明的资格类型 -->
   <view class="type-tag" wx:if="{{eligibilityType}}">
-    <text>已声明：{{getEligibilityLabel(eligibilityType)}}</text>
+    <text>已选择本地资格类型</text>
   </view>
 
   <!-- 佐证类型选择 -->
@@ -36,7 +36,7 @@
     <text class="section-title">上传佐证材料</text>
     <view class="upload-area">
       <view class="upload-hint">
-        <text class="hint-text">支持 JPG/PNG，最多 6 张</text>
+        <text class="hint-text">支持 JPG/PNG，最多 {{maxFiles}} 张</text>
       </view>
       <view class="image-grid">
         <view
@@ -47,7 +47,7 @@
           <image src="{{item}}" mode="aspectFill" class="image-preview" />
           <view class="image-remove" bindtap="onRemoveImage" data-index="{{index}}">×</view>
         </view>
-        <view class="upload-btn" bindtap="onChooseImage">
+        <view class="upload-btn" bindtap="onChooseImage" wx:if="{{uploadedFileIds.length < maxFiles}}">
           <text class="upload-icon">+</text>
           <text class="upload-text">上传</text>
         </view>
@@ -57,13 +57,13 @@
 
   <!-- 隐私提示 -->
   <view class="privacy-note">
-    <text class="note-text">🔒 仅用于资格审核，不对其他用户展示</text>
+    <text class="note-text">材料仅用于资格审核，不对其他用户展示</text>
   </view>
 
   <!-- 提交按钮 -->
   <view class="action-bar">
-    <button class="btn-primary" bindtap="onSubmit">
-      提交审核
+    <button class="btn-primary" bindtap="onSubmit" loading="{{submitting}}" disabled="{{submitting || uploading}}">
+      {{submitting ? '提交中…' : '提交审核'}}
     </button>
   </view>
 </view>