feat(seedance): 同步输入图片约束与自动转换

apps/api/internal/runner/service.go

@@ -986,6 +986,20 @@ func (s *Service) runCandidate(ctx context.Context, task store.GatewayTask, user
 		})
 		return clients.Response{}, err
 	}
+	if strings.TrimSpace(task.RemoteTaskID) == "" {
+		providerBody, err = s.normalizeVideoInputImages(ctx, providerBody, candidate)
+		if err != nil {
+			_ = s.store.FinishTaskAttempt(ctx, store.FinishTaskAttemptInput{
+				AttemptID:    attemptID,
+				Status:       "failed",
+				Retryable:    false,
+				Metrics:      mergeMetrics(baseAttemptMetrics, map[string]any{"error": err.Error(), "retryable": false, "trace": []any{failureTraceEntry(err, false)}}),
+				ErrorCode:    clients.ErrorCode(err),
+				ErrorMessage: err.Error(),
+			})
+			return clients.Response{}, err
+		}
+	}
 	callStartedAt := time.Now()
 	publicResponseID := ""
 	publicPreviousResponseID := ""