feat: 添加微信SDK和关卡页面，重构预制体结构

- 新增 WxSDK 微信SDK工具类
- 新增 PageLevel 关卡选择页面组件
- 将 prefabs 目录从 resources 移至根目录
- 更新 ViewManager 支持预制体属性引用
- 添加 BaseView 页面基类

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

assets/prefabs/PageHome.ts

@@ -0,0 +1,77 @@
+import { _decorator, Node, Button } from 'cc';
+import { BaseView } from 'db://assets/scripts/core/BaseView';
+import { ViewManager } from 'db://assets/scripts/core/ViewManager';
+import { WxSDK } from 'db://assets/scripts/utils/WxSDK';
+const { ccclass, property } = _decorator;
+
+/**
+ * 首页组件
+ * 继承 BaseView，实现页面生命周期
+ */
+@ccclass('PageHome')
+export class PageHome extends BaseView {
+    @property({ type: Node, tooltip: '开始游戏按钮' })
+    startGameBtn: Node | null = null;
+
+    /**
+     * 页面首次加载时调用
+     */
+    onViewLoad(): void {
+        console.log('[PageHome] onViewLoad');
+        this._initButtons();
+        this._initWxShare();
+    }
+
+    /**
+     * 初始化微信分享功能
+     */
+    private _initWxShare(): void {
+        WxSDK.initShare({
+            title: '写英语',
+            imageUrl: '',
+            query: ''
+        });
+    }
+
+    /**
+     * 初始化按钮事件
+     */
+    private _initButtons(): void {
+        if (this.startGameBtn) {
+            this.startGameBtn.on(Button.EventType.CLICK, this._onStartGameClick, this);
+        }
+    }
+
+    /**
+     * 开始游戏按钮点击回调
+     */
+    private _onStartGameClick(): void {
+        console.log('[PageHome] 开始游戏按钮点击');
+        ViewManager.instance.open('PageLevel');
+    }
+
+    /**
+     * 页面每次显示时调用
+     */
+    onViewShow(): void {
+        console.log('[PageHome] onViewShow');
+    }
+
+    /**
+     * 页面隐藏时调用
+     */
+    onViewHide(): void {
+        console.log('[PageHome] onViewHide');
+    }
+
+    /**
+     * 页面销毁时调用
+     */
+    onViewDestroy(): void {
+        console.log('[PageHome] onViewDestroy');
+        // 移除按钮事件监听
+        if (this.startGameBtn) {
+            this.startGameBtn.off(Button.EventType.CLICK, this._onStartGameClick, this);
+        }
+    }
+}