chore: update app generation workflow

server/internal/tenant/app/template_service.go

@@ -545,6 +545,30 @@ func (s *TemplateService) executeGeneration(ctx context.Context, job generationJ
 	quotaRepo := repository.NewQuotaRepository(tx)
 	auditTx := repository.NewAuditRepository(tx)
 
+	if err := EnsureGenerationArticleWritable(ctx, tx, job.ArticleID, job.TenantID); err != nil {
+		if IsGenerationArticleUnavailable(err) {
+			rollbackGenerationTx(tx)
+			if cleanupErr := HandleGenerationTaskArticleUnavailable(ctx, s.pool, s.cache, ClaimedGenerationTask{
+				ID:                 job.TaskID,
+				TenantID:           job.TenantID,
+				OperatorID:         job.OperatorID,
+				ArticleID:          job.ArticleID,
+				QuotaReservationID: job.ReservationID,
+				TaskType:           "template",
+				InputParams:        cloneInputParams(job.Params),
+			}, "template", false); cleanupErr != nil && s.logger != nil {
+				s.logger.Warn("template generation article unavailable cleanup failed",
+					zap.Error(cleanupErr),
+					zap.Int64("task_id", job.TaskID),
+					zap.Int64("article_id", job.ArticleID),
+				)
+			}
+			return
+		}
+		failWithRollback("persist_article_status", err)
+		return
+	}
+
 	versionID, err := articleRepo.CreateArticleVersion(ctx, repository.CreateArticleVersionInput{
 		ArticleID:       job.ArticleID,
 		Title:           title,