add proxy switch demo

public/proxy/proxy-settings.js

@@ -0,0 +1,41 @@
+// 代理配置存储和管理
+export const ProxySettings = {
+    async importSettings(settings) {
+        try {
+            if (Array.isArray(settings) && settings.every(s => s.proxyType)) {
+                await chrome.storage.local.set({proxyConfigs: settings});
+                return {success: true};
+            }
+            return {success: false, error: "Invalid settings format"};
+        } catch (error) {
+            return {success: false, error: error.message};
+        }
+    },
+
+    async exportSettings() {
+        try {
+            const {proxyConfigs} = await chrome.storage.local.get('proxyConfigs');
+            return {success: true, settings: proxyConfigs || []};
+        } catch (error) {
+            return {success: false, error: error.message};
+        }
+    },
+
+    async setDefaultConfigs() {
+        const result = await chrome.storage.local.get('proxyConfigs');
+        if (!result.proxyConfigs) {
+            const defaultConfigs = [{
+                id: 'direct',
+                name: '直接连接',
+                proxyType: 'direct',
+                enabled: false
+            }];
+            await chrome.storage.local.set({ proxyConfigs: defaultConfigs });
+        }
+        // 确保 proxyLogs 存在
+        const logsResult = await chrome.storage.local.get('proxyLogs');
+        if (!logsResult.proxyLogs) {
+            await chrome.storage.local.set({ proxyLogs: [] });
+        }
+    }
+};