fix: disable reasoning mode for translation to improve efficiency (#11998)

* fix: disable reasoning mode for translation to improve efficiency

- 修改 getDefaultTranslateAssistant 函数，将默认推理选项设置为 'none'
- 避免 PR #11942 引入的 'default' 选项导致翻译重新启用思考模式
- 显著提升翻译速度和性能
- 符合翻译场景不需要复杂推理的业务逻辑

* fix(AssistantService): adjust reasoning effort

Set reasoning effort to 'none' only if supported by model, otherwise use 'default'.

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Co-authored-by: icarus <eurfelux@gmail.com>

src/renderer/src/services/AssistantService.ts

@@ -74,7 +74,9 @@ export function getDefaultTranslateAssistant(
     throw new Error('Unknown target language')
   }
 
-  const reasoningEffort = getModelSupportedReasoningEffortOptions(model)?.[0]
+  const supportedOptions = getModelSupportedReasoningEffortOptions(model)
+  // disable reasoning if it could be disabled, otherwise no configuration
+  const reasoningEffort = supportedOptions?.includes('none') ? 'none' : 'default'
   const settings = {
     temperature: 0.7,
     reasoning_effort: reasoningEffort,