fix: B1 — 无 Projector 路径调用 markSucceeded 防止 Job 卡在 running

projectorKey 为 undefined 或 Projector 未注册时，
ProjectionExecutor 调用 markSucceeded 后再返回空 Artifact 列表。
避免 Engine 的 AI 调用成功后 Job 永远停留在 running 状态。

Co-Authored-By: Claude <noreply@anthropic.com>

src/modules/ai-job/projection-executor.service.ts

@@ -54,14 +54,16 @@ export class ProjectionExecutor {
     context: ProjectionContext,
   ): Promise<ArtifactReference[]> {
     if (!projectorKey) {
-      this.logger.log(`No projectorKey for jobType=${context.job.jobType} — skipping projection`);
+      this.logger.log(`No projectorKey for jobType=${context.job.jobType} — marking succeeded without projection`);
+      await this.lifecycleRepo.markSucceeded(context.job.id);
       return [];
     }
 
     const projector = this.projectorMap.get(projectorKey);
     if (!projector) {
-      // Projector 未注册，跳过（不应影响 job 成功）
-      this.logger.warn(`Projector "${projectorKey}" not registered — skipping projection for job=${context.job.id}`);
+      // Projector 未注册 — 仍应标记 Job 成功（Engine 的 AI 调用已完成）
+      this.logger.warn(`Projector "${projectorKey}" not registered — marking succeeded without projection for job=${context.job.id}`);
+      await this.lifecycleRepo.markSucceeded(context.job.id);
       return [];
     }