尝试新增api 优化导出

electron/services/chatService.ts

@@ -2237,7 +2237,9 @@ class ChatService {
       }
 
       // 检查是否是 base64 编码
-      if (this.looksLikeBase64(raw)) {
+      // 只有当字符串足够长（超过16字符）且看起来像 base64 时才尝试解码
+      // 短字符串（如 "test", "home" 等）容易被误判为 base64
+      if (raw.length > 16 && this.looksLikeBase64(raw)) {
         try {
           const bytes = Buffer.from(raw, 'base64')
           return this.decodeBinaryContent(bytes, raw)