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/components/lawyer-card/lawyer-card.ts

@@ -0,0 +1,33 @@
+Component({
+  data: {
+    specialtiesText: '',
+  },
+  properties: {
+    lawyer: {
+      type: Object,
+      value: null,
+    },
+    showOffice: {
+      type: Boolean,
+      value: true,
+    },
+  },
+  observers: {
+    lawyer(lawyer: { specialties?: string[] } | null) {
+      const specialties =
+        lawyer && Array.isArray(lawyer.specialties) ? lawyer.specialties : [];
+      this.setData({
+        specialties, // Expose array for wx:for
+        specialtiesText: specialties.join(' | '),
+      });
+    },
+  },
+  methods: {
+    handleTap() {
+      const lawyer = this.properties.lawyer as { id?: string } | null;
+      this.triggerEvent('select', {
+        id: lawyer && typeof lawyer.id === 'string' ? lawyer.id : '',
+      });
+    },
+  },
+});