feat: prepare Zhinian desktop client for pilot release

electron/api/server.ts

@@ -14,6 +14,7 @@ import { handleLogRoutes } from './routes/logs';
 import { handleUsageRoutes } from './routes/usage';
 import { handleSkillRoutes } from './routes/skills';
 import { handleFileRoutes } from './routes/files';
+import { handleKnowledgeRoutes } from './routes/knowledge';
 import { handleSessionRoutes } from './routes/sessions';
 import { handleCronRoutes } from './routes/cron';
 import { handleDiagnosticsRoutes } from './routes/diagnostics';
@@ -35,6 +36,7 @@ const coreRouteHandlers: RouteHandler[] = [
   handleChannelRoutes,
   handleSkillRoutes,
   handleFileRoutes,
+  handleKnowledgeRoutes,
   handleSessionRoutes,
   handleCronRoutes,
   handleDiagnosticsRoutes,