feat: record stream interruption reasons via StreamStatus

- Add StreamStatus type (relay/common) to track stream end reason
  (done/timeout/client_gone/scanner_error/eof/panic/ping_fail) and
  accumulate soft errors during streaming via sync.Once + sync.Mutex.
- Add StreamResult (relay/helper) as the callback interface: adapters
  call sr.Error() for soft errors, sr.Stop() for fatal, sr.Done() for
  normal completion. No early-return problem — multiple errors per chunk
  are naturally supported.
- Refactor StreamScannerHandler callback from func(string) bool to
  func(string, *StreamResult). All 9 channel adapters updated.
- Write stream_status into log other JSON field (admin-only) with
  status ok/error, end_reason, error_count, and error messages.
- Frontend: display stream status in log detail expansion for admins.

relay/channel/openai/relay_responses.go

@@ -79,55 +79,55 @@ func OaiResponsesStreamHandler(c *gin.Context, info *relaycommon.RelayInfo, resp
 	var usage = &dto.Usage{}
 	var responseTextBuilder strings.Builder
 
-	helper.StreamScannerHandler(c, resp, info, func(data string) bool {
+	helper.StreamScannerHandler(c, resp, info, func(data string, sr *helper.StreamResult) {
 
 		// 检查当前数据是否包含 completed 状态和 usage 信息
 		var streamResponse dto.ResponsesStreamResponse
-		if err := common.UnmarshalJsonStr(data, &streamResponse); err == nil {
-			sendResponsesStreamData(c, streamResponse, data)
-			switch streamResponse.Type {
-			case "response.completed":
-				if streamResponse.Response != nil {
-					if streamResponse.Response.Usage != nil {
-						if streamResponse.Response.Usage.InputTokens != 0 {
-							usage.PromptTokens = streamResponse.Response.Usage.InputTokens
-						}
-						if streamResponse.Response.Usage.OutputTokens != 0 {
-							usage.CompletionTokens = streamResponse.Response.Usage.OutputTokens
-						}
-						if streamResponse.Response.Usage.TotalTokens != 0 {
-							usage.TotalTokens = streamResponse.Response.Usage.TotalTokens
-						}
-						if streamResponse.Response.Usage.InputTokensDetails != nil {
-							usage.PromptTokensDetails.CachedTokens = streamResponse.Response.Usage.InputTokensDetails.CachedTokens
-						}
+		if err := common.UnmarshalJsonStr(data, &streamResponse); err != nil {
+			logger.LogError(c, "failed to unmarshal stream response: "+err.Error())
+			sr.Error(err)
+			return
+		}
+		sendResponsesStreamData(c, streamResponse, data)
+		switch streamResponse.Type {
+		case "response.completed":
+			if streamResponse.Response != nil {
+				if streamResponse.Response.Usage != nil {
+					if streamResponse.Response.Usage.InputTokens != 0 {
+						usage.PromptTokens = streamResponse.Response.Usage.InputTokens
 					}
-					if streamResponse.Response.HasImageGenerationCall() {
-						c.Set("image_generation_call", true)
-						c.Set("image_generation_call_quality", streamResponse.Response.GetQuality())
-						c.Set("image_generation_call_size", streamResponse.Response.GetSize())
+					if streamResponse.Response.Usage.OutputTokens != 0 {
+						usage.CompletionTokens = streamResponse.Response.Usage.OutputTokens
+					}
+					if streamResponse.Response.Usage.TotalTokens != 0 {
+						usage.TotalTokens = streamResponse.Response.Usage.TotalTokens
+					}
+					if streamResponse.Response.Usage.InputTokensDetails != nil {
+						usage.PromptTokensDetails.CachedTokens = streamResponse.Response.Usage.InputTokensDetails.CachedTokens
 					}
 				}
-			case "response.output_text.delta":
-				// 处理输出文本
-				responseTextBuilder.WriteString(streamResponse.Delta)
-			case dto.ResponsesOutputTypeItemDone:
-				// 函数调用处理
-				if streamResponse.Item != nil {
-					switch streamResponse.Item.Type {
-					case dto.BuildInCallWebSearchCall:
-						if info != nil && info.ResponsesUsageInfo != nil && info.ResponsesUsageInfo.BuiltInTools != nil {
-							if webSearchTool, exists := info.ResponsesUsageInfo.BuiltInTools[dto.BuildInToolWebSearchPreview]; exists && webSearchTool != nil {
-								webSearchTool.CallCount++
-							}
+				if streamResponse.Response.HasImageGenerationCall() {
+					c.Set("image_generation_call", true)
+					c.Set("image_generation_call_quality", streamResponse.Response.GetQuality())
+					c.Set("image_generation_call_size", streamResponse.Response.GetSize())
+				}
+			}
+		case "response.output_text.delta":
+			// 处理输出文本
+			responseTextBuilder.WriteString(streamResponse.Delta)
+		case dto.ResponsesOutputTypeItemDone:
+			// 函数调用处理
+			if streamResponse.Item != nil {
+				switch streamResponse.Item.Type {
+				case dto.BuildInCallWebSearchCall:
+					if info != nil && info.ResponsesUsageInfo != nil && info.ResponsesUsageInfo.BuiltInTools != nil {
+						if webSearchTool, exists := info.ResponsesUsageInfo.BuiltInTools[dto.BuildInToolWebSearchPreview]; exists && webSearchTool != nil {
+							webSearchTool.CallCount++
 						}
 					}
 				}
 			}
-		} else {
-			logger.LogError(c, "failed to unmarshal stream response: "+err.Error())
 		}
-		return true
 	})
 
 	if usage.CompletionTokens == 0 {