feat(toast): 实现原生Toast系统并优化会员购买错误处理

- 新增iOS原生Toast模块(NativeToastManager)，提供毛玻璃风格的Toast展示
- 重构ToastContext为原生模块调用，添加错误边界和回退机制
- 优化会员购买流程的错误处理，使用RevenueCat标准错误码
- 调整购买按钮高度和恢复购买按钮字体大小，改善UI体验
- 移除不必要的延迟和注释代码，提升代码质量

utils/toast.utils.ts

@@ -1,58 +1,122 @@
 /**
- * 全局Toast工具函数
- * 
- * 使用方式：
+ * Global toast helper backed by native UI.
+ *
+ * Usage:
  * import { Toast } from '@/utils/toast.utils';
- * 
+ *
  * Toast.success('操作成功！');
  * Toast.error('操作失败！');
  * Toast.warning('注意！');
  */
 
-import { ToastContextType } from '@/contexts/ToastContext';
+import { NativeModules, Platform, ToastAndroid } from 'react-native';
 
-let toastRef: ToastContextType | null = null;
+export type ToastType = 'default' | 'success' | 'error' | 'warning' | 'info';
 
-export const setToastRef = (ref: ToastContextType) => {
-  toastRef = ref;
-};
+export interface ToastConfig {
+  message?: string;
+  text1?: string;
+  duration?: number;
+  type?: ToastType;
+  backgroundColor?: string;
+  textColor?: string;
+  icon?: string;
+}
 
-export const Toast = {
-  success: (message: string, duration?: number) => {
-    if (toastRef) {
-      toastRef.showSuccess(message, duration);
-    } else {
-      console.warn('Toast not initialized. Please wrap your app with ToastProvider');
-    }
-  },
-
-  error: (message: string, duration?: number) => {
-    if (toastRef) {
-      toastRef.showError(message, duration);
-    } else {
-      console.warn('Toast not initialized. Please wrap your app with ToastProvider');
-    }
-  },
-
-  warning: (message: string, duration?: number) => {
-    if (toastRef) {
-      toastRef.showWarning(message, duration);
-    } else {
-      console.warn('Toast not initialized. Please wrap your app with ToastProvider');
-    }
-  },
-
-  show: (config: {
-    message: string;
+type NativeToastModule = {
+  show: (options: {
+    message?: string;
+    text1?: string;
     duration?: number;
+    type?: ToastType;
     backgroundColor?: string;
     textColor?: string;
     icon?: string;
-  }) => {
-    if (toastRef) {
-      toastRef.showToast(config);
-    } else {
-      console.warn('Toast not initialized. Please wrap your app with ToastProvider');
+  }) => void;
+};
+
+const DEFAULT_DURATION = 2000;
+const MIN_DURATION = 1000;
+const MAX_DURATION = 10000;
+
+// 增强类型安全性：添加运行时检查确保模块存在且具有预期的方法
+const nativeToast = NativeModules.NativeToastManager &&
+  typeof NativeModules.NativeToastManager.show === 'function'
+  ? NativeModules.NativeToastManager as NativeToastModule
+  : undefined;
+
+const clampDuration = (duration?: number) => {
+  const value = typeof duration === 'number' ? duration : DEFAULT_DURATION;
+  return Math.min(Math.max(value, MIN_DURATION), MAX_DURATION);
+};
+
+const resolveMessage = (config: ToastConfig) => {
+  const raw = (config.message ?? config.text1 ?? '').toString();
+  return raw.trim();
+};
+
+const showOnAndroid = (message: string, duration: number) => {
+  const toastDuration = duration >= 3000 ? ToastAndroid.LONG : ToastAndroid.SHORT;
+  ToastAndroid.showWithGravity(message, toastDuration, ToastAndroid.CENTER);
+};
+
+const showNative = (config: ToastConfig) => {
+  const message = resolveMessage(config);
+
+  if (!message) {
+    console.warn('Toast invoked without message content');
+    return;
+  }
+
+  const duration = clampDuration(config.duration);
+  const type = config.type ?? 'default';
+
+  if (Platform.OS === 'android') {
+    showOnAndroid(message, duration);
+    return;
+  }
+
+  if (nativeToast?.show) {
+    nativeToast.show({
+      ...config,
+      message,
+      duration,
+      type,
+    });
+    return;
+  }
+
+  // 为不支持的平台提供更明显的用户反馈
+  if (Platform.OS === 'web') {
+    // 在 Web 环境下使用 console.warn 并尝试使用浏览器原生 alert
+    console.warn(`Toast: ${message}`);
+    try {
+      // 仅在重要消息时使用 alert，避免过度打扰用户
+      if (config.type === 'error' || config.type === 'warning') {
+        alert(message);
+      }
+    } catch (e) {
+      // 忽略 alert 错误
     }
+  } else {
+    console.log(`Toast: ${message}`);
+  }
+};
+
+export const Toast = {
+  show: (config: ToastConfig) => {
+    showNative(config);
   },
-};
+  success: (message: string, duration?: number) => {
+    showNative({ message, duration, type: 'success' });
+  },
+  error: (message: string, duration?: number) => {
+    showNative({ message, duration, type: 'error' });
+  },
+  warning: (message: string, duration?: number) => {
+    showNative({ message, duration, type: 'warning' });
+  },
+  info: (message: string, duration?: number) => {
+    showNative({ message, duration, type: 'info' });
+  },
+};