fix(InstanceDetail): update status mapping and config field names

- Map instance status from boolean to string values for consistency
- Rename config file fields to match camelCase convention

src/views/InstanceDetail.vue

@@ -331,7 +331,7 @@ export default {
         const loadInstanceStatus = async () => {
             try {
                 const result = await instanceApi.getInstanceStatus(instanceID.value);
-                instanceStatus.value = result.data.status;
+                instanceStatus.value = result.data.isRunning ? 'running' : 'stopped';
                 statusInfo.value = result.data;
             } catch (error) {
                 showNotification('Load instance status failed', 'error');
@@ -474,8 +474,8 @@ export default {
                 );
                 
                 const configFileData = { // Update config file
-                    server_addr: formData.value.serverAddr,
-                    server_port: formData.value.serverPort,
+                    serverAddr: formData.value.serverAddr,
+                    serverPort: formData.value.serverPort,
                     auth_method: formData.value.auth_method
                 };