修正响应解析错误的 provider 归属

parse_json_payload 增加 ImageProvider 参数，ResponseParse 使用实际 provider

共享的 handle_image_response 解析失败时不再把 Tiantoken 响应记成 vector-engine

server-rs/crates/platform-image/src/image_provider/protocol/payload.rs

@@ -1,19 +1,20 @@
 use serde_json::Value;
 
 use crate::image_provider::{
-    constants::VECTOR_ENGINE_PROVIDER,
     error::PlatformImageError,
+    types::ImageProvider,
     util::{ParsedJsonPayload, truncate_raw},
 };
 
 pub(super) fn parse_json_payload(
     raw_text: &str,
     failure_context: &str,
+    provider: ImageProvider,
 ) -> Result<ParsedJsonPayload, PlatformImageError> {
     serde_json::from_str::<Value>(raw_text)
         .map(|payload| ParsedJsonPayload { payload })
         .map_err(|error| PlatformImageError::ResponseParse {
-            provider: VECTOR_ENGINE_PROVIDER,
+            provider: provider.as_str(),
             message: format!("{failure_context}：解析响应失败：{error}"),
             raw_excerpt: truncate_raw(raw_text),
             audit: None,

server-rs/crates/platform-image/src/image_provider/protocol/response.rs

@@ -66,7 +66,7 @@ pub(crate) async fn handle_image_response(
         });
     }
 
-    let response_json = match parse_json_payload(response_text, failure_context) {
+    let response_json = match parse_json_payload(response_text, failure_context, provider) {
         Ok(response_json) => response_json,
         Err(error) => {
             let audit = build_failure_audit(