Bump napcat-types & add plugin static/memory tests

Upgrade napcat-types to v0.0.15 and update the built-in plugin UI to test both filesystem and in-memory static resources. dashboard.html: clarify which plugin endpoints require auth, add buttons and a testMemoryResource() function that fetches an in-memory JSON resource, and add staticBase/memBase variables for non-auth static routes. napcat-webui-backend: return after 404 for missing memory files to stop further handling. (Lockfile updated accordingly.)

packages/napcat-webui-backend/index.ts

@@ -329,7 +329,7 @@ export async function InitWebUi (logger: ILogWrapper, pathWrapper: NapCatPathWra
         }
       }
     }
-    res.status(404).json({ code: -1, message: 'Memory file not found' });
+    return res.status(404).json({ code: -1, message: 'Memory file not found' });
   });
 
   // 插件文件系统静态资源路由（不需要鉴权）