fix: 修复响应体解析逻辑并统一结构包装

service/prompt/prompt_compose_service.go

@@ -274,29 +274,23 @@ func ParseStructResult(raw map[string]any, responseBody string) map[string]any {
 	}
 
 	contentVal := raw[responseBody]
-	if contentVal == nil {
-		return map[string]any{
-			"total_rounds": 1,
-			"rounds":       []map[string]any{raw},
-		}
-	}
 
+	var rounds []map[string]any
+
+	// 是字符串，尝试解析
 	contentStr := gconv.String(contentVal)
 	if contentStr == "" || contentStr == "0" {
+		rounds = append(rounds, map[string]any{responseBody: raw})
 		return map[string]any{
 			"total_rounds": 1,
-			"rounds":       []map[string]any{raw},
+			"rounds":       rounds,
 		}
 	}
 
 	// 尝试解析为数组
-	var arr []map[string]any
+	var arr []any
 	if err := json.Unmarshal([]byte(contentStr), &arr); err == nil && len(arr) > 0 {
-		// 数组的每个元素包一层 content
-		var rounds []map[string]any
-		for _, item := range arr {
-			rounds = append(rounds, map[string]any{"content": item})
-		}
+		rounds = append(rounds, map[string]any{responseBody: arr})
 		return map[string]any{
 			"total_rounds": len(rounds),
 			"rounds":       rounds,
@@ -304,15 +298,20 @@ func ParseStructResult(raw map[string]any, responseBody string) map[string]any {
 	}
 
 	// 尝试解析为单个对象
-	var parsed map[string]any
+	var parsed any
 	if err := json.Unmarshal([]byte(contentStr), &parsed); err == nil {
-		raw[responseBody] = parsed
+		rounds = append(rounds, map[string]any{responseBody: parsed})
+		return map[string]any{
+			"total_rounds": 1,
+			"rounds":       rounds,
+		}
 	}
 
-	// 兜底：包标准结构
+	// 兜底：原始字符串作为内容
+	rounds = append(rounds, map[string]any{responseBody: contentStr})
 	return map[string]any{
 		"total_rounds": 1,
-		"rounds":       []map[string]any{raw},
+		"rounds":       rounds,
 	}
 }