docs: 更新文档

docs/en/admin/webui.md

@@ -67,7 +67,10 @@ The VNC display feature requires the service to be running in Xvfb + VNC mode.
 
 ### Instance Management
 
-Manage browser instance and Worker configurations (requires a restart to take effect).
+- Batch manage instance proxies and deletions
+- Manage browser instance and Worker configurations
+
+> Requires a restart to take effect
 
 ## Quick Actions
 

docs/en/config/overview.md

@@ -160,6 +160,9 @@ Performance optimization options for CPU-Only environments. Reduces CPU load by
 | `strategy` | string | `least_busy` | Load balancing strategy. Option: `least_busy`. |
 | `failover.enabled` | boolean | `true` | Whether to enable automatic failover. |
 | `failover.maxRetries` | number | `2` | Maximum retry attempts for failover. |
+| `failover.imgDlRetry` | boolean | `false` | Image download retry. When enabled, automatically retries downloading the image/video upon failure (without regenerating). |
+| `failover.imgDlRetryMaxRetries` | number | `2` | Download retry count. The maximum number of retry attempts when an image download fails, range 1-10. |
+| `waitTimeout` | number | `120000` | Generation wait time. The maximum timeout in milliseconds the program waits for the generation result to return. |
 | `instances` | array | - | List of browser instances. See [Instances Configuration](/en/config/instances). |
 
 ### Adapter Configuration (backend.adapter)