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/shared/infra/outbox/route_registry.go

@@ -0,0 +1,136 @@
+package outbox
+
+import (
+	"errors"
+	"fmt"
+	"strings"
+	"sync"
+)
+
+var outboxRouteRegistry = struct {
+	sync.RWMutex
+	eventToService map[string]string
+	serviceRoutes  map[string]ServiceRoute
+}{
+	eventToService: make(map[string]string),
+	serviceRoutes:  make(map[string]ServiceRoute),
+}
+
+// RegisterServiceRoute 注册或覆盖某个服务的物理 outbox 路由。
+//
+// 职责边界：
+// 1. 只登记“服务 -> table/topic/group”目录，不登记事件归属；
+// 2. 同服务重复注册时以后者覆盖前者，方便显式配置覆盖默认目录；
+// 3. 空服务名直接报错，避免把共享 topic 误当成新终态。
+func RegisterServiceRoute(route ServiceRoute) error {
+	route = normalizeServiceRoute(route)
+	if route.ServiceName == "" {
+		return errors.New("serviceName is empty")
+	}
+
+	outboxRouteRegistry.Lock()
+	defer outboxRouteRegistry.Unlock()
+
+	outboxRouteRegistry.serviceRoutes[route.ServiceName] = route
+	return nil
+}
+
+// RegisterEventService 记录“事件类型 -> 服务归属”的全局路由。
+//
+// 职责边界：
+// 1. 只登记跨进程都要识别的事件归属，不承载 handler 逻辑；
+// 2. 同一 event_type 只能归属一个服务，重复登记同值视为幂等；
+// 3. 若该服务还没有显式路由，则先写入默认服务目录，保证后续能查到 table/topic/group。
+func RegisterEventService(eventType, serviceName string) error {
+	eventType = strings.TrimSpace(eventType)
+	if eventType == "" {
+		return errors.New("eventType is empty")
+	}
+	serviceName = normalizeServiceName(serviceName)
+	if serviceName == "" {
+		return errors.New("serviceName is empty")
+	}
+
+	outboxRouteRegistry.Lock()
+	defer outboxRouteRegistry.Unlock()
+
+	if existing, ok := outboxRouteRegistry.eventToService[eventType]; ok {
+		if existing != serviceName {
+			return fmt.Errorf("eventType %s already registered to service %s", eventType, existing)
+		}
+		return nil
+	}
+
+	outboxRouteRegistry.eventToService[eventType] = serviceName
+	return nil
+}
+
+// ResolveEventService 查询某个事件类型的归属服务。
+//
+// 返回值说明：
+// 1. serviceName 为登记结果；
+// 2. ok=false 表示当前路由表里还没有这个事件类型的归属信息。
+func ResolveEventService(eventType string) (serviceName string, ok bool) {
+	eventType = strings.TrimSpace(eventType)
+	if eventType == "" {
+		return "", false
+	}
+
+	outboxRouteRegistry.RLock()
+	defer outboxRouteRegistry.RUnlock()
+
+	serviceName, ok = outboxRouteRegistry.eventToService[eventType]
+	return serviceName, ok
+}
+
+// ResolveServiceRoute 查询某个服务的物理 outbox 配置。
+//
+// 返回值说明：
+// 1. route 始终返回一个可执行的目录结果，未显式注册时回退默认目录；
+// 2. ok=true 表示命中显式注册目录，ok=false 表示走默认目录；
+// 3. 这样既能支持显式配置覆盖，也能让基础设施在启动初期就有稳定默认值。
+func ResolveServiceRoute(serviceName string) (route ServiceRoute, ok bool) {
+	serviceName = normalizeServiceName(serviceName)
+	if serviceName == "" {
+		return DefaultServiceRoute(""), false
+	}
+
+	outboxRouteRegistry.RLock()
+	route, ok = outboxRouteRegistry.serviceRoutes[serviceName]
+	outboxRouteRegistry.RUnlock()
+	if ok {
+		return normalizeServiceRoute(route), true
+	}
+	if route, ok = configuredServiceRoute(serviceName); ok {
+		return route, true
+	}
+	return DefaultServiceRoute(serviceName), false
+}
+
+// ResolveEventRoute 先按事件查服务，再按服务查物理目录。
+//
+// 返回值说明：
+// 1. route 包含事件所在服务的 table/topic/group；
+// 2. ok=true 只表示“事件 -> 服务归属”已登记；
+// 3. 服务目录若未显式注册，会自动回退到默认目录。
+func ResolveEventRoute(eventType string) (route ServiceRoute, ok bool) {
+	serviceName, ok := ResolveEventService(eventType)
+	if !ok {
+		return ServiceRoute{}, false
+	}
+	route, _ = ResolveServiceRoute(serviceName)
+	return route, true
+}
+
+func configuredServiceRoute(serviceName string) (ServiceRoute, bool) {
+	cfg, ok := ResolveServiceConfig(serviceName)
+	if !ok {
+		return ServiceRoute{}, false
+	}
+	return normalizeServiceRoute(ServiceRoute{
+		ServiceName: cfg.Name,
+		TableName:   cfg.TableName,
+		Topic:       cfg.Topic,
+		GroupID:     cfg.GroupID,
+	}), true
+}