feat: add docs and dev plugins

src/plugins/index.ts

@@ -1,6 +1,9 @@
 import { PluginManager } from './core/manager';
+
+// plugins
 import timetablePlugin from './built-in/timetable';
 import notificationCollectorPlugin from './built-in/notificationCollector';
+import testPlugin from './built-in/test';
 
 // Initialize plugin manager
 const pluginManager = PluginManager.getInstance();
@@ -8,6 +11,7 @@ const pluginManager = PluginManager.getInstance();
 // Register built-in plugins
 pluginManager.registerPlugin(timetablePlugin);
 pluginManager.registerPlugin(notificationCollectorPlugin);
+pluginManager.registerPlugin(testPlugin);
 
 // Legacy plugin exports
 export { init as Monofile } from './monofile';