补充 Raw 图片客户端错误上下文

为 HTTP 客户端构造失败统一保留操作上下文

补充配置错误文案回归测试

server-rs/crates/platform-image/src/vector_engine/raw_edit.rs

@@ -152,7 +152,7 @@ pub async fn create_vector_engine_raw_image_edit(
         .timeout(Duration::from_millis(request_timeout_ms))
         .http1_only()
         .build()
-        .map_err(|error| invalid_config(error.to_string()))?;
+        .map_err(|error| invalid_config(failure_context, error.to_string()))?;
     let response = client
         .post(url.as_str())
         .bearer_auth(settings.api_key.as_str())
@@ -354,10 +354,10 @@ fn invalid_input(context: &str, message: String) -> PlatformImageError {
     }
 }
 
-fn invalid_config(message: String) -> PlatformImageError {
+fn invalid_config(context: &str, message: String) -> PlatformImageError {
     PlatformImageError::InvalidConfig {
         provider: VECTOR_ENGINE_PROVIDER,
-        message,
+        message: format!("{context}：构造请求客户端失败：{message}"),
     }
 }
 
@@ -580,4 +580,14 @@ mod tests {
 
         assert_eq!(error.to_string(), "raw_image_edit：请求参数无效：尺寸无效");
     }
+
+    #[test]
+    fn invalid_config_error_keeps_operation_context() {
+        let error = invalid_config("raw_image_edit", "builder failed".to_string());
+
+        assert_eq!(
+            error.to_string(),
+            "raw_image_edit：构造请求客户端失败：builder failed"
+        );
+    }
 }