refactor: 将客服后端重构为宿主可嵌入模块

- 注入数据库、运行时配置、统一响应、文件存储和平台 AI 能力，补充业务读写工具与客户快捷操作契约。

- 移除模块内重复的组织、客户、工单、标签、技能、旧工作流、MCP 和迁移实现，将身份权限与业务主体交由宿主管理。

- 使用 libSQL 重构向量存储，并完善图片消息、访客身份、排队调度、企业微信和支持聊天页面。

- 统一 HTTP、DTO 与 WebSocket 的 snake_case 协议，补齐模块初始化、业务动作和公共载荷等回归测试。

aiagent.go

@@ -1,36 +1,84 @@
 package aiagent
 
 import (
+	"context"
 	"errors"
 	"net/http"
 
+	"code.tczkiot.com/wlw/ai-agent/contract"
 	"code.tczkiot.com/wlw/ai-agent/identity"
+	"code.tczkiot.com/wlw/ai-agent/internal/ai"
 	"code.tczkiot.com/wlw/ai-agent/internal/bootstrap"
+	"code.tczkiot.com/wlw/ai-agent/internal/models"
+	"code.tczkiot.com/wlw/ai-agent/internal/pkg/httpx"
 	"code.tczkiot.com/wlw/ai-agent/internal/services"
+	"code.tczkiot.com/wlw/ai-agent/internal/services/storage"
+
+	"gorm.io/gorm"
 )
 
 type Options struct {
-	ConfigPath    string
-	QuerySubjects identity.QuerySubjectsFunc
-	Authorize     identity.AuthorizeFunc
+	Database             *gorm.DB
+	TablePrefix          string
+	LoadSettings         func(ctx context.Context, prefix string) (map[string]string, error)
+	QuerySubjects        identity.QuerySubjectsFunc
+	Authorize            identity.AuthorizeFunc
+	ResponseWriter       contract.ResponseWriter
+	FileStorage          contract.FileStorage
+	BusinessReadTools    []contract.BusinessReadTool
+	BusinessActionTools  []contract.BusinessActionTool
+	CustomerQuickActions []contract.CustomerQuickAction
+	PlatformAI           contract.PlatformAIProvider
+}
+
+// SyncSchema explicitly creates or updates AI Agent tables. It is intended
+// for the host application's maintenance command and is never called by New.
+func SyncSchema(database *gorm.DB, tablePrefix string) error {
+	if tablePrefix == "" {
+		tablePrefix = "ai_"
+	}
+	moduleDB, err := bootstrap.ScopedDatabase(database, tablePrefix)
+	if err != nil {
+		return err
+	}
+	return moduleDB.AutoMigrate(models.Models...)
 }
 
 // New initializes the customer-service business module. Authentication and
 // authorization must already have been completed by the host system.
 func New(options Options) (http.Handler, error) {
+	if options.Database == nil {
+		return nil, errors.New("ai-agent: Database is required")
+	}
+	if options.LoadSettings == nil {
+		return nil, errors.New("ai-agent: LoadSettings is required")
+	}
 	if options.QuerySubjects == nil {
 		return nil, errors.New("ai-agent: QuerySubjects is required")
 	}
 	if options.Authorize == nil {
 		return nil, errors.New("ai-agent: Authorize is required")
 	}
-	if options.ConfigPath == "" {
-		options.ConfigPath = "config/config.yaml"
+	if options.TablePrefix == "" {
+		options.TablePrefix = "ai_"
 	}
 	services.SetQuerySubjects(options.QuerySubjects)
 	services.SetAuthorize(options.Authorize)
-	if err := bootstrap.Init(options.ConfigPath); err != nil {
+	services.SetPlatformAIProvider(options.PlatformAI)
+	ai.SetPlatformAIProvider(options.PlatformAI)
+	if err := services.SetBusinessReadTools(options.BusinessReadTools); err != nil {
 		return nil, err
 	}
+	if err := services.SetBusinessActionTools(options.BusinessActionTools); err != nil {
+		return nil, err
+	}
+	if err := services.SetCustomerQuickActions(options.CustomerQuickActions); err != nil {
+		return nil, err
+	}
+	storage.SetHostStorage(options.FileStorage)
+	if err := bootstrap.InitModule(options.Database, options.TablePrefix, options.LoadSettings); err != nil {
+		return nil, err
+	}
+	httpx.SetResponseWriter(options.ResponseWriter)
 	return bootstrap.NewServer()
 }