feat: 搭建微信小程序展示端

- 初始化小程序工程配置与类型声明

- 增加首页、律所、律师列表、详情与历史页面

- 补充公共组件、运行时配置与示例素材

frontend_miniprogram/miniprogram/pages/firm/index.wxml

@@ -0,0 +1,60 @@
+<view class="container-page firm-page">
+  <!-- Custom Navigation Bar with transparent background initially if possible, or just standard -->
+  <app-header title="{{firm.name}}" back="{{false}}" background="rgba(255,255,255,0.9)"></app-header>
+
+  <scroll-view class="page-content" scroll-y="true" type="list">
+    
+    <!-- Hero Section -->
+    <view class="hero-section">
+      <image wx:if="{{firm.heroImage}}" class="hero-bg" mode="aspectFill" src="{{firm.heroImage}}"></image>
+      <view wx:if="{{!firm.heroImage}}" class="hero-overlay"></view>
+      <view class="hero-content">
+        <view class="firm-stats">
+          <view class="stat-item">
+            <text class="stat-num">{{firm.officeCount}}</text>
+            <text class="stat-label">办公机构</text>
+          </view>
+          <view class="stat-divider"></view>
+          <view class="stat-item">
+            <text class="stat-num">{{firm.lawyerCount}}</text>
+            <text class="stat-label">专业律师</text>
+          </view>
+        </view>
+      </view>
+    </view>
+
+    <!-- Content Container (Overlapping) -->
+    <view class="content-container">
+      
+      <!-- Address Card -->
+      <view class="card address-card" bindtap="openLocation">
+        <view class="address-info">
+          <text class="address-label">总部地址</text>
+          <text class="address-text">{{firm.hqAddress}}</text>
+        </view>
+        <text class="address-icon">></text>
+      </view>
+
+      <!-- Intro Section -->
+      <view class="section">
+        <view class="section-title">律所简介</view>
+        <text class="intro-text">{{firm.intro}}</text>
+      </view>
+
+      <!-- Practice Areas -->
+      <view class="section">
+        <view class="section-title">专业领域</view>
+        <view class="tags-wrapper">
+          <view class="area-tag" wx:for="{{firm.practiceAreas}}" wx:key="*this">{{item}}</view>
+        </view>
+      </view>
+      
+      <view class="safe-area-bottom" style="height: 120rpx;"></view>
+    </view>
+  </scroll-view>
+
+  <!-- Bottom CTA -->
+  <view class="bottom-bar safe-area-bottom">
+    <button class="cta-btn" bindtap="goLawyerList">查找专业律师</button>
+  </view>
+</view>