重构与优化，旨在解决遗留的性能问题并优化用户体验，本次提交遗留了较多的待测功能

electron/exportWorker.ts

@@ -0,0 +1,47 @@
+import { parentPort, workerData } from 'worker_threads'
+import { wcdbService } from './services/wcdbService'
+import { exportService, ExportOptions } from './services/exportService'
+
+interface ExportWorkerConfig {
+  sessionIds: string[]
+  outputDir: string
+  options: ExportOptions
+  resourcesPath?: string
+  userDataPath?: string
+  logEnabled?: boolean
+}
+
+const config = workerData as ExportWorkerConfig
+process.env.WEFLOW_WORKER = '1'
+if (config.resourcesPath) {
+  process.env.WCDB_RESOURCES_PATH = config.resourcesPath
+}
+
+wcdbService.setPaths(config.resourcesPath || '', config.userDataPath || '')
+wcdbService.setLogEnabled(config.logEnabled === true)
+
+async function run() {
+  const result = await exportService.exportSessions(
+    Array.isArray(config.sessionIds) ? config.sessionIds : [],
+    String(config.outputDir || ''),
+    config.options || { format: 'json' },
+    (progress) => {
+      parentPort?.postMessage({
+        type: 'export:progress',
+        data: progress
+      })
+    }
+  )
+
+  parentPort?.postMessage({
+    type: 'export:result',
+    data: result
+  })
+}
+
+run().catch((error) => {
+  parentPort?.postMessage({
+    type: 'export:error',
+    error: String(error)
+  })
+})