fixes for reading from env

src/blog/providers/Article.tsx

@@ -33,10 +33,7 @@ interface ArticleContextType {
 
 const ArticleContext = createContext<ArticleContextType | undefined>(undefined);
 
-// You can configure this through an .env or fallback to localhost
-const API_BASE =
-  import.meta?.env?.VITE_API_BASE_URL ||
-  'http://localhost:8000'; // Matches your OpenAPI "local development server"
+const API_BASE = import.meta.env.VITE_API_BASE_URL;
 
 export const ArticleProvider: React.FC<{ children: React.ReactNode }> = ({ children }) => {
   const [articles, setArticles] = useState<Article[]>([]);