fix(queue): 回收终态任务的孤儿 River Job

原因：Worker 滚动切换后，执行租约恢复会终态化提交结果不确定的任务，但失活 Worker 持有的 River Job 仍需等待一小时通用救援窗口。\n\n影响：仅在任务已终态、执行租约清空、River owner 无活跃 Worker 且超过 45 秒时，将孤儿 Job 幂等标记为 completed；活跃 owner 不受影响。\n\n验证：PostgreSQL 集成测试覆盖失活 owner、活跃 owner 与重复回收；API 全量 go test 和 go vet 通过。

apps/api/internal/runner/queue_worker.go

@@ -694,6 +694,20 @@ func (s *Service) recoverOrphanedAsyncRiverJobs(ctx context.Context) {
 				"cleanedTaskAdmissions", runtimeRecovery.CleanedTaskAdmissions,
 			)
 		}
+		finalizedTerminalJobs, err := s.coordinationStore.FinalizeOrphanedTerminalAsyncRiverJobs(
+			ctx,
+			orphanedRiverJobWorkerStaleAfter,
+			orphanedRiverJobRecoveryBatchSize,
+		)
+		if err != nil {
+			if ctx.Err() == nil {
+				s.logger.Warn("finalize orphaned terminal river jobs failed", "error", err)
+			}
+			return
+		}
+		if finalizedTerminalJobs > 0 {
+			s.logger.Warn("orphaned terminal river jobs finalized", "count", finalizedTerminalJobs)
+		}
 		yieldedAdmissions, err := s.coordinationStore.YieldStaleAsyncTaskAdmissions(
 			ctx,
 			orphanedRiverJobWorkerStaleAfter,