perf(worker): 提交后发送准入唤醒通知

将准入登记、派发、释放、恢复和验收清理中的 PostgreSQL NOTIFY 从同步复制业务事务移到提交后的独立异步提交事务，避免数据库对象锁串行阻塞跨城事务。通知继续作为有轮询兜底的限时提示，不改变任务状态、租约和账务的同步提交语义。

验证：Go 全量测试、go vet、迁移安全检查、gofmt、diff check 通过；新增集成回归确认 NOTIFY 对象锁存在时准入状态仍先提交可见。

apps/api/internal/store/tasks_runtime.go

@@ -715,11 +715,14 @@ WHERE task_id = $1::uuid
 		if _, err := tx.Exec(ctx, `DELETE FROM gateway_task_admissions WHERE task_id = $1::uuid`, taskID); err != nil {
 			return err
 		}
-		return notifyTaskAdmissionTx(ctx, tx, "*")
+		return nil
 	})
 	if err != nil {
 		return GatewayTask{}, false, err
 	}
+	if changed {
+		s.notifyTaskAdmissionBestEffort(ctx, "*")
+	}
 	return task, changed, nil
 }
 
@@ -877,11 +880,14 @@ WHERE task_id = $1::uuid
 		if _, err := tx.Exec(ctx, `DELETE FROM gateway_task_admissions WHERE task_id = $1::uuid`, taskID); err != nil {
 			return err
 		}
-		return notifyTaskAdmissionTx(ctx, tx, "*")
+		return nil
 	})
 	if err != nil {
 		return GatewayTask{}, false, err
 	}
+	if changed {
+		s.notifyTaskAdmissionBestEffort(ctx, "*")
+	}
 	return task, changed, nil
 }
 
@@ -963,11 +969,14 @@ WHERE task_id = $1::uuid
 		if _, err := tx.Exec(ctx, `DELETE FROM gateway_task_admissions WHERE task_id = $1::uuid`, taskID); err != nil {
 			return err
 		}
-		return notifyTaskAdmissionTx(ctx, tx, "*")
+		return nil
 	})
 	if err != nil {
 		return GatewayTask{}, false, err
 	}
+	if changed {
+		s.notifyTaskAdmissionBestEffort(ctx, "*")
+	}
 	return task, changed, nil
 }