Version: 0.9.70.dev.260504

后端：
1. 阶段 5 schedule 首刀服务化落地，新增 `cmd/schedule`、`services/schedule/{dao,rpc,sv,core}`、`gateway/client/schedule`、`shared/contracts/schedule` 和 schedule port
2. gateway `/api/v1/schedule/*` 切到 schedule zrpc client，HTTP 门面只保留鉴权、参数绑定、超时和轻量转发
3. active-scheduler 的 schedule facts、feedback 和 confirm apply 改为调用 schedule RPC adapter，减少对 `schedule_events`、`schedules`、`task_classes`、`task_items` 的跨域 DB 依赖
4. 单体聊天主动调度 rerun 的 schedule 读写链路切到 schedule RPC，迁移期仅保留 task facts 直读 Gorm
5. 为 schedule zrpc 补充 `Ping` 启动健康检查，并在 gateway client 与 active-scheduler adapter 初始化时校验服务可用
6. `cmd/schedule` 独立初始化 DB / Redis，只 AutoMigrate schedule 自有表，并显式检查迁移期 task / task-class 依赖表
7. 更新 active-scheduler 依赖表检查和 preview confirm apply 抽象，保留旧 Gorm 实现作为迁移期回退路径
8. 补充 `schedule.rpc` 示例配置和 schedule HTTP RPC 超时配置

文档：
1. 更新微服务迁移计划，将阶段 5 schedule 首刀进展、当前切流点、旧实现保留范围和 active-scheduler DB 依赖收缩情况写入基线

backend/cmd/schedule/main.go

@@ -0,0 +1,68 @@
+package main
+
+import (
+	"context"
+	"log"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"github.com/LoveLosita/smartflow/backend/bootstrap"
+	rootdao "github.com/LoveLosita/smartflow/backend/dao"
+	rootmiddleware "github.com/LoveLosita/smartflow/backend/middleware"
+	"github.com/LoveLosita/smartflow/backend/services/schedule/core/applyadapter"
+	scheduledao "github.com/LoveLosita/smartflow/backend/services/schedule/dao"
+	schedulerpc "github.com/LoveLosita/smartflow/backend/services/schedule/rpc"
+	schedulesv "github.com/LoveLosita/smartflow/backend/services/schedule/sv"
+	"github.com/spf13/viper"
+)
+
+func main() {
+	if err := bootstrap.LoadConfig(); err != nil {
+		log.Fatalf("failed to load config: %v", err)
+	}
+
+	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
+	defer stop()
+
+	db, err := scheduledao.OpenDBFromConfig()
+	if err != nil {
+		log.Fatalf("failed to connect schedule database: %v", err)
+	}
+	redisClient, err := scheduledao.OpenRedisFromConfig()
+	if err != nil {
+		log.Fatalf("failed to connect schedule redis: %v", err)
+	}
+	defer redisClient.Close()
+
+	cacheRepo := rootdao.NewCacheDAO(redisClient)
+	if err := db.Use(rootmiddleware.NewGormCachePlugin(cacheRepo)); err != nil {
+		log.Fatalf("failed to initialize schedule cache deleter: %v", err)
+	}
+
+	svc := schedulesv.NewScheduleService(
+		scheduledao.NewScheduleDAO(db),
+		rootdao.NewTaskClassDAO(db),
+		rootdao.NewManager(db),
+		cacheRepo,
+	)
+	svc.SetApplyAdapter(applyadapter.NewGormApplyAdapter(db))
+
+	server, listenOn, err := schedulerpc.NewServer(schedulerpc.ServerOptions{
+		ListenOn: viper.GetString("schedule.rpc.listenOn"),
+		Timeout:  viper.GetDuration("schedule.rpc.timeout"),
+		Service:  svc,
+	})
+	if err != nil {
+		log.Fatalf("failed to build schedule zrpc server: %v", err)
+	}
+	defer server.Stop()
+
+	go func() {
+		log.Printf("schedule zrpc service starting on %s", listenOn)
+		server.Start()
+	}()
+
+	<-ctx.Done()
+	log.Println("schedule service stopping")
+}