fix(poe): poe cannot process multiple text part (#9711)

fix(poe): 修复poe provider不支持array content的问题

临时解决方案是强制poe使用string content，同时将reasoning_effort参数拼接逻辑优化为使用suffix变量

src/renderer/src/aiCore/clients/openai/OpenAIApiClient.ts

@@ -639,12 +639,18 @@ export class OpenAIAPIClient extends OpenAIBaseClient<
           }
           if (this.provider.id === SystemProviderIds.poe) {
             // 如果以后 poe 支持 reasoning_effort 参数了，可以删掉这部分
+            let suffix = ''
             if (isGPT5SeriesModel(model) && reasoningEffort.reasoning_effort) {
-              lastUserMsg.content += ` --reasoning_effort ${reasoningEffort.reasoning_effort}`
+              suffix = ` --reasoning_effort ${reasoningEffort.reasoning_effort}`
             } else if (isClaudeReasoningModel(model) && reasoningEffort.thinking?.budget_tokens) {
-              lastUserMsg.content += ` --thinking_budget ${reasoningEffort.thinking.budget_tokens}`
+              suffix = ` --thinking_budget ${reasoningEffort.thinking.budget_tokens}`
             } else if (isGeminiReasoningModel(model) && reasoningEffort.extra_body?.google?.thinking_config) {
-              lastUserMsg.content += ` --thinking_budget ${reasoningEffort.extra_body.google.thinking_config.thinking_budget}`
+              suffix = ` --thinking_budget ${reasoningEffort.extra_body.google.thinking_config.thinking_budget}`
+            }
+            // FIXME: poe 不支持多个text part，上传文本文件的时候用的不是file part而是text part，因此会出问题
+            // 临时解决方案是强制poe用string content，但是其实poe部分支持array
+            if (typeof lastUserMsg.content === 'string') {
+              lastUserMsg.content += suffix
             }
           }
         }

src/renderer/src/config/providers.ts

@@ -1262,7 +1262,8 @@ const NOT_SUPPORT_ARRAY_CONTENT_PROVIDERS = [
   'deepseek',
   'baichuan',
   'minimax',
-  'xirang'
+  'xirang',
+  'poe'
 ] as const satisfies SystemProviderId[]
 
 /**