Version: 0.5.8.dev.260315

♻️ refactor(agent): 拆分 agentsvc，并增强 quicknote/outbox 注释与可维护性

- 📦 将 Agent 服务实现从 `service` 根目录迁移到 `service/agentsvc`，包含 `agent.go`、`agent_quick_note.go` 及相关测试
- 🔌 新增 service 层兼容桥接 `agent_bridge.go`，保持 `service.NewAgentService` 与 `*service.AgentService` 现有调用方式不变
- 📝 为 `quicknote` 补充高密度中文步骤化注释，覆盖 `graph` / `runner` / `nodes` / `tool` / `state` / `prompt`，明确职责边界、分支条件、重试与兜底策略
- 🧭 为 `infra/outbox` 与 service agent 链路补充详细中文注释，覆盖状态机流转、幂等处理、失败回写与异步持久化语义
- ✅ 统一格式化相关文件，并通过全量后端测试：`go test ./...`

📝 chore(docs): 更新 AGENTS.md 注释强制规范

- 📚 追加“注释规范（强制）”与“注释风格示例”
- ✍️ 明确复杂逻辑必须使用步骤化注释、跨文件调用需写调用目的、注释需同步维护

backend/cmd/start.go

@@ -7,8 +7,9 @@ import (
 
 	"github.com/LoveLosita/smartflow/backend/api"
 	"github.com/LoveLosita/smartflow/backend/dao"
+	kafkabus "github.com/LoveLosita/smartflow/backend/infra/kafka"
+	outboxinfra "github.com/LoveLosita/smartflow/backend/infra/outbox"
 	"github.com/LoveLosita/smartflow/backend/inits"
-	kafkabus "github.com/LoveLosita/smartflow/backend/kafka"
 	"github.com/LoveLosita/smartflow/backend/middleware"
 	"github.com/LoveLosita/smartflow/backend/pkg"
 	"github.com/LoveLosita/smartflow/backend/routers"
@@ -58,14 +59,14 @@ func Start() {
 	scheduleRepo := dao.NewScheduleDAO(db)
 	manager := dao.NewManager(db)
 	agentRepo := dao.NewAgentDAO(db)
-	outboxRepo := dao.NewOutboxDAO(db)
+	outboxRepo := outboxinfra.NewRepository(db)
 
 	// outbox 异步链路接线：
 	// - 读取 Kafka 配置
-	// - 初始化 producer/consumer
-	// - 启动 dispatch/consume 两个后台循环
+	// - 创建基础设施级 outbox 异步引擎
+	// - 引擎内部负责 dispatch/consume 两个后台循环
 	kafkaCfg := kafkabus.LoadConfig()
-	asyncPipeline, err := service.NewAgentAsyncPipeline(outboxRepo, kafkaCfg)
+	asyncPipeline, err := outboxinfra.NewChatHistoryAsync(outboxRepo, kafkaCfg)
 	if err != nil {
 		log.Fatalf("Failed to initialize Kafka async pipeline: %v", err)
 	}