feat: 实例分组增强阶段1（后端 JSON 存储与命令）

packages/app-lib/src/event/mod.rs

@@ -395,6 +395,10 @@ pub enum ServerPayloadType {
         eula_text: String,
     },
 }
+#[derive(Serialize, Clone)]
+pub struct InstanceGroupsChangedPayload {
+    pub instance_ids: Vec<String>,
+}
 
 #[derive(Serialize, Clone)]
 #[cfg(feature = "tauri")]