fix: 修复打包后模块无法加载的问题，改用静态模块加载

api/watcher/watcher.ts

@@ -1,6 +1,6 @@
 import chokidar, { FSWatcher } from 'chokidar';
 import path from 'path';
-import { NOTEBOOK_ROOT } from '../config/paths.js';
+import { config } from '../config/index.js';
 import { eventBus } from '../events/eventBus.js';
 import { logger } from '../utils/logger.js';
 import { toPosixPath } from '../../shared/utils/path.js';
@@ -10,16 +10,17 @@ let watcher: FSWatcher | null = null;
 export const startWatcher = (): void => {
   if (watcher) return;
 
-  logger.info(`Starting file watcher for: ${NOTEBOOK_ROOT}`);
+  const notebookRoot = config.notebookRoot;
+  logger.info(`Starting file watcher for: ${notebookRoot}`);
 
-  watcher = chokidar.watch(NOTEBOOK_ROOT, {
+  watcher = chokidar.watch(notebookRoot, {
     ignored: /(^|[\/\\])\../,
     persistent: true,
     ignoreInitial: true,
   });
 
   const broadcast = (event: string, changedPath: string) => {
-    const rel = path.relative(NOTEBOOK_ROOT, changedPath);
+    const rel = path.relative(notebookRoot, changedPath);
     if (!rel || rel.startsWith('..') || path.isAbsolute(rel)) return;
     logger.info(`File event: ${event} - ${rel}`);
     eventBus.broadcast({ event, path: toPosixPath(rel) });