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。

internal/bootstrap/server.go

@@ -6,7 +6,6 @@ import (
 	"strings"
 	"time"
 
-	"code.tczkiot.com/wlw/ai-agent/internal/ai/mcps"
 	_ "code.tczkiot.com/wlw/ai-agent/internal/ai/runtime"
 	"code.tczkiot.com/wlw/ai-agent/internal/handlers/api"
 	"code.tczkiot.com/wlw/ai-agent/internal/middleware"
@@ -16,6 +15,7 @@ import (
 	"code.tczkiot.com/wlw/ai-agent/internal/pkg/i18nx"
 	"code.tczkiot.com/wlw/ai-agent/internal/pkg/tracex"
 	"code.tczkiot.com/wlw/ai-agent/internal/services"
+	"code.tczkiot.com/wlw/ai-agent/internal/web/supportchat"
 
 	"github.com/gin-gonic/gin"
 	"github.com/mlogclub/simple/web"
@@ -60,7 +60,7 @@ func NewServer() (*gin.Engine, error) {
 
 func corsMiddleware() gin.HandlerFunc {
 	allowedOrigins := config.Current().Server.CORS.AllowedOrigins
-	allowHeaders := "Origin, Content-Type, Accept, Authorization, X-Requested-With, X-Channel-Id"
+	allowHeaders := "Origin, Content-Type, Accept, Authorization, X-Requested-With, X-Channel-Id, X-External-Id, X-External-Name"
 	exposeHeaders := "Content-Length, Content-Type, Authorization"
 	allowMethods := "GET, POST, PUT, PATCH, DELETE, OPTIONS"
 	allowedOriginSet := make(map[string]struct{}, len(allowedOrigins))
@@ -147,7 +147,7 @@ func isWebsocketUpgrade(ctx *gin.Context) bool {
 }
 
 func addRouter(app *gin.Engine) {
-	app.Any("/api/mcp", gin.WrapH(mcps.NewHTTPHandler()))
+	supportchat.RegisterRoutes(app)
 
 	apiGroup := app.Group("/api")
 	apiGroup.GET("/health", api.Health)
@@ -163,12 +163,7 @@ func addRouter(app *gin.Engine) {
 
 	dashboardGroup := app.Group("/api/dashboard", middleware.AuthMiddleware)
 	registerDashboardDashboardRoutes(dashboardGroup.Group("/dashboard"))
-	registerDashboardCompanyRoutes(dashboardGroup.Group("/company"))
-	registerDashboardCustomerRoutes(dashboardGroup.Group("/customer"))
-	registerDashboardCustomerContactRoutes(dashboardGroup.Group("/customer-contact"))
-	registerDashboardTagRoutes(dashboardGroup.Group("/tag"))
 	registerDashboardConversationRoutes(dashboardGroup.Group("/conversation"))
-	registerDashboardTicketRoutes(dashboardGroup.Group("/ticket"))
 	registerDashboardNotificationRoutes(dashboardGroup.Group("/notification"))
 	registerDashboardQuickReplyRoutes(dashboardGroup.Group("/quick-reply"))
 	registerDashboardChannelRoutes(dashboardGroup.Group("/channel"))
@@ -176,9 +171,9 @@ func addRouter(app *gin.Engine) {
 	registerDashboardAgentTeamRoutes(dashboardGroup.Group("/agent-team"))
 	registerDashboardAgentTeamScheduleRoutes(dashboardGroup.Group("/agent-team-schedule"))
 	registerDashboardAIAgentRoutes(dashboardGroup.Group("/ai-agent"))
-	registerDashboardAIWorkflowRoutes(dashboardGroup.Group("/ai-workflow"))
 	registerDashboardAgentRunRoutes(dashboardGroup.Group("/agent-run"))
 	registerDashboardAIConfigRoutes(dashboardGroup.Group("/ai-config"))
+	registerDashboardPlatformAIRoutes(dashboardGroup.Group("/platform-ai"))
 	registerDashboardAssetRoutes(dashboardGroup.Group("/asset"))
 	registerDashboardKnowledgeBaseRoutes(dashboardGroup.Group("/knowledge-base"))
 	registerDashboardKnowledgeDirectoryRoutes(dashboardGroup.Group("/knowledge-directory"))
@@ -186,8 +181,6 @@ func addRouter(app *gin.Engine) {
 	registerDashboardKnowledgeFAQRoutes(dashboardGroup.Group("/knowledge-faq"))
 	registerDashboardKnowledgeRetrieveRoutes(dashboardGroup.Group("/knowledge-retrieve"))
 	registerDashboardKnowledgeRetrieveLogRoutes(dashboardGroup.Group("/knowledge-retrieve-log"))
-	registerDashboardSkillDefinitionRoutes(dashboardGroup.Group("/skill-definition"))
-	registerDashboardMCPRoutes(dashboardGroup.Group("/mcp"))
 
 	thirdGroup := app.Group("/api/third")
 	registerThirdWechatRoutes(thirdGroup.Group("/wechat"))