添加角球设置功能，更新状态管理和界面显示逻辑

lib/storage.ts

@@ -7,6 +7,7 @@ const STORAGE_KEYS = {
   USER: "user",
   ODDS_SETTINGS: "odds_settings",
   CARDS_SETTINGS: "cards_settings",
+  CORNER_SETTINGS: "corner_settings",
 };
 
 export interface OddsSettings {
@@ -18,6 +19,10 @@ export interface CardsSettings {
   enabled: boolean;
 }
 
+export interface CornerSettings {
+  enabled: boolean;
+}
+
 export const storage = {
   async setAccessToken(token: string): Promise<void> {
     await AsyncStorage.setItem(STORAGE_KEYS.ACCESS_TOKEN, token);
@@ -83,6 +88,25 @@ export const storage = {
     }
   },
 
+  async setCornerSettings(settings: CornerSettings): Promise<void> {
+    await AsyncStorage.setItem(
+      STORAGE_KEYS.CORNER_SETTINGS,
+      JSON.stringify(settings),
+    );
+  },
+
+  async getCornerSettings(): Promise<CornerSettings> {
+    const settingsStr = await AsyncStorage.getItem(
+      STORAGE_KEYS.CORNER_SETTINGS,
+    );
+    if (!settingsStr) return { enabled: false };
+    try {
+      return JSON.parse(settingsStr) as CornerSettings;
+    } catch {
+      return { enabled: false };
+    }
+  },
+
   async clear(): Promise<void> {
     await AsyncStorage.multiRemove([
       STORAGE_KEYS.ACCESS_TOKEN,