统一API Base URL保存与请求时去除末尾斜杠

src/lib/ai-orchestrator.ts

@@ -6,6 +6,7 @@
 
 import { fetchDoubanData as fetchDoubanAPI } from '@/lib/douban';
 import { getNextApiKey } from '@/lib/tmdb.client';
+import { normalizeApiBaseUrl } from '@/lib/url';
 
 export interface VideoContext {
   title?: string;
@@ -468,7 +469,9 @@ ${availableSources.length === 0 ? '⚠️ 没有可用的数据源，请返回
       }
     } else {
       // OpenAI 或 自定义 (OpenAI兼容格式)
-      const baseURL = config.baseURL || 'https://api.openai.com/v1';
+      const baseURL = normalizeApiBaseUrl(
+        config.baseURL || 'https://api.openai.com/v1'
+      );
       response = await fetch(`${baseURL}/chat/completions`, {
         method: 'POST',
         headers: {