fix: 替换 extractMemories 的 require() 为动态 import() 修复 Vite 构建崩溃

Vite/Rollup 构建时将 require() 通过 __toCommonJS() 包装 ESM 导出，
导致命名导出被包裹在 { default: namespace } 中，访问
extractMemoriesModule.initExtractMemories 为 undefined 触发 React
error boundary 崩溃。改用标准 ESM 动态 import() 绕过 CJS interop。

Co-Authored-By: glm-5-turbo <zai-org@claude-code-best.win>

src/utils/backgroundHousekeeping.ts

@@ -4,9 +4,6 @@ import { initMagicDocs } from '../services/MagicDocs/magicDocs.js'
 import { initSkillImprovement } from './hooks/skillImprovement.js'
 
 /* eslint-disable @typescript-eslint/no-require-imports */
-const extractMemoriesModule = feature('EXTRACT_MEMORIES')
-  ? (require('../services/extractMemories/extractMemories.js') as typeof import('../services/extractMemories/extractMemories.js'))
-  : null
 const registerProtocolModule = feature('LODESTONE')
   ? (require('./deepLink/registerProtocol.js') as typeof import('./deepLink/registerProtocol.js'))
   : null
@@ -32,7 +29,13 @@ export function startBackgroundHousekeeping(): void {
   void initMagicDocs()
   void initSkillImprovement()
   if (feature('EXTRACT_MEMORIES')) {
-    extractMemoriesModule!.initExtractMemories()
+    void import('../services/extractMemories/extractMemories.js')
+      .then(({ initExtractMemories }) => {
+        initExtractMemories()
+      })
+      .catch(() => {
+        // Module load failure — non-critical, memory extraction just won't run
+      })
   }
   initAutoDream()
   void autoUpdateMarketplacesAndPluginsInBackground()