Version: 0.9.77.dev.260505

后端：
1.阶段 6 CP4/CP5 目录收口与共享边界纯化
- 将 backend 根目录收口为 services、client、gateway、cmd、shared 五个一级目录
- 收拢 bootstrap、inits、infra/kafka、infra/outbox、conv、respond、pkg、middleware，移除根目录旧实现与空目录
- 将 utils 下沉到 services/userauth/internal/auth，将 logic 下沉到 services/schedule/core/planning
- 将迁移期 runtime 桥接实现统一收拢到 services/runtime/{conv,dao,eventsvc,model}，删除 shared/legacy 与未再被 import 的旧 service 实现
- 将 gateway/shared/respond 收口为 HTTP/Gin 错误写回适配，shared/respond 仅保留共享错误语义与状态映射
- 将 HTTP IdempotencyMiddleware 与 RateLimitMiddleware 收口到 gateway/middleware
- 将 GormCachePlugin 下沉到 shared/infra/gormcache，将共享 RateLimiter 下沉到 shared/infra/ratelimit，将 agent token budget 下沉到 services/agent/shared
- 删除 InitEino 兼容壳，收缩 cmd/internal/coreinit 仅保留旧组合壳残留域初始化语义
- 更新微服务迁移计划与桌面 checklist，补齐 CP4/CP5 当前切流点、目录终态与验证结果
- 完成 go test ./...、git diff --check 与最终真实 smoke；health、register/login、task/create+get、schedule/today、task-class/list、memory/items、agent chat/meta/timeline/context-stats 全部 200，SSE 合并结果为 CP5_OK 且 [DONE] 只有 1 个

backend/services/notification/dao/connect.go

@@ -3,11 +3,10 @@ package dao
 import (
 	"fmt"
 
-	outboxinfra "github.com/LoveLosita/smartflow/backend/infra/outbox"
-	coremodel "github.com/LoveLosita/smartflow/backend/model"
 	notificationmodel "github.com/LoveLosita/smartflow/backend/services/notification/model"
-	"github.com/spf13/viper"
-	"gorm.io/driver/mysql"
+	coremodel "github.com/LoveLosita/smartflow/backend/services/runtime/model"
+	mysqlinfra "github.com/LoveLosita/smartflow/backend/shared/infra/mysql"
+	outboxinfra "github.com/LoveLosita/smartflow/backend/shared/infra/outbox"
 	"gorm.io/gorm"
 )
 
@@ -18,18 +17,7 @@ import (
 // 2. 不迁移主动调度、agent、userauth 或其它服务表；
 // 3. 返回的 *gorm.DB 供 notification 服务内 DAO 和 outbox consumer 复用。
 func OpenDBFromConfig() (*gorm.DB, error) {
-	host := viper.GetString("database.host")
-	port := viper.GetString("database.port")
-	user := viper.GetString("database.user")
-	password := viper.GetString("database.password")
-	dbname := viper.GetString("database.dbname")
-
-	dsn := fmt.Sprintf(
-		"%s:%s@tcp(%s:%s)/%s?charset=utf8mb4&parseTime=True&loc=Local",
-		user, password, host, port, dbname,
-	)
-
-	db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
+	db, err := mysqlinfra.OpenDBFromConfig()
 	if err != nil {
 		return nil, err
 	}

backend/services/notification/rpc/errors.go

@@ -5,7 +5,7 @@ import (
 	"log"
 	"strings"
 
-	"github.com/LoveLosita/smartflow/backend/respond"
+	"github.com/LoveLosita/smartflow/backend/shared/respond"
 	"google.golang.org/genproto/googleapis/rpc/errdetails"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"

backend/services/notification/rpc/handler.go

@@ -5,10 +5,10 @@ import (
 	"errors"
 	"time"
 
-	"github.com/LoveLosita/smartflow/backend/respond"
 	"github.com/LoveLosita/smartflow/backend/services/notification/rpc/pb"
 	notificationsv "github.com/LoveLosita/smartflow/backend/services/notification/sv"
 	contracts "github.com/LoveLosita/smartflow/backend/shared/contracts/notification"
+	"github.com/LoveLosita/smartflow/backend/shared/respond"
 )
 
 type Handler struct {

backend/services/notification/sv/channel.go

@@ -5,10 +5,10 @@ import (
 	"errors"
 	"strings"
 
-	"github.com/LoveLosita/smartflow/backend/respond"
 	notificationfeishu "github.com/LoveLosita/smartflow/backend/services/notification/internal/feishu"
 	notificationmodel "github.com/LoveLosita/smartflow/backend/services/notification/model"
 	contracts "github.com/LoveLosita/smartflow/backend/shared/contracts/notification"
+	"github.com/LoveLosita/smartflow/backend/shared/respond"
 	"gorm.io/gorm"
 )
 

backend/services/notification/sv/outbox.go

@@ -7,9 +7,9 @@ import (
 	"log"
 	"strings"
 
-	kafkabus "github.com/LoveLosita/smartflow/backend/infra/kafka"
-	outboxinfra "github.com/LoveLosita/smartflow/backend/infra/outbox"
 	sharedevents "github.com/LoveLosita/smartflow/backend/shared/events"
+	kafkabus "github.com/LoveLosita/smartflow/backend/shared/infra/kafka"
+	outboxinfra "github.com/LoveLosita/smartflow/backend/shared/infra/outbox"
 )
 
 // OutboxBus 是 notification 服务注册消费 handler 需要的最小总线接口。