feat: 新增多模块功能与服务实现

新增广告计划、用户资产、B2B交易、合规规则等核心模型
实现爬虫工作器、贸易服务、现金流预测等业务服务
添加RBAC权限测试、压力测试等测试用例
完善扩展程序的消息处理与内容脚本功能
重构应用入口与文档生成器
更新项目规则与业务闭环分析文档

extension/src/background/index.ts

@@ -0,0 +1,71 @@
+import { OrderCollector } from './OrderCollector';
+import { ReturnSync } from './ReturnSync';
+import { RefundQuery } from './RefundQuery';
+import { MessageHandler } from './MessageHandler';
+import { Logger } from '../utils/Logger';
+
+const logger = new Logger('Background');
+
+const orderCollector = new OrderCollector();
+const returnSync = new ReturnSync();
+const refundQuery = new RefundQuery();
+const messageHandler = new MessageHandler(orderCollector, returnSync, refundQuery);
+
+chrome.runtime.onInstalled.addListener((details) => {
+  logger.info('Extension installed', { reason: details.reason });
+  
+  if (details.reason === 'install') {
+    chrome.storage.local.set({
+      initialized: true,
+      config: {
+        apiEndpoint: 'http://localhost:3003',
+        syncInterval: 300000,
+        maxRetries: 3,
+      },
+    });
+  }
+});
+
+chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
+  logger.info('Message received', { type: message.type, sender: sender.tab?.id });
+  
+  messageHandler.handle(message, sender)
+    .then((result) => sendResponse({ success: true, data: result }))
+    .catch((error) => {
+      logger.error('Message handler error', { error: error.message });
+      sendResponse({ success: false, error: error.message });
+    });
+  
+  return true;
+});
+
+chrome.alarms.onAlarm.addListener(async (alarm) => {
+  logger.info('Alarm triggered', { name: alarm.name });
+  
+  switch (alarm.name) {
+    case 'orderSync':
+      await orderCollector.syncAllShops();
+      break;
+    case 'returnSync':
+      await returnSync.syncAllReturns();
+      break;
+    case 'refundQuery':
+      await refundQuery.queryAllRefunds();
+      break;
+  }
+});
+
+async function setupAlarms() {
+  const config = await chrome.storage.local.get('config');
+  const syncInterval = config.config?.syncInterval || 300000;
+  
+  chrome.alarms.create('orderSync', { periodInMinutes: syncInterval / 60000 });
+  chrome.alarms.create('returnSync', { periodInMinutes: (syncInterval * 2) / 60000 });
+  chrome.alarms.create('refundQuery', { periodInMinutes: (syncInterval * 3) / 60000 });
+  
+  logger.info('Alarms setup complete', { syncInterval });
+}
+
+setupAlarms();
+
+export { orderCollector, returnSync, refundQuery };