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/services/event_handlers/notification_event_handler.go

@@ -11,49 +11,14 @@ import (
 	"code.tczkiot.com/wlw/ai-agent/internal/pkg/eventbus"
 	"code.tczkiot.com/wlw/ai-agent/internal/pkg/i18nx"
 	"code.tczkiot.com/wlw/ai-agent/internal/services"
-
-	"github.com/mlogclub/simple/common/strs"
 )
 
 func init() {
-	eventbus.
-		Register[events.TicketAssignedEvent]().
-		Subscribe(handleTicketAssignedInAppNotification)
 	eventbus.
 		Register[events.ConversationAssignedEvent]().
 		Subscribe(handleConversationAssignedInAppNotification)
 }
 
-func handleTicketAssignedInAppNotification(ctx context.Context, event events.TicketAssignedEvent) error {
-	if event.TicketID <= 0 || event.ToUserID <= 0 {
-		return nil
-	}
-	ticket := services.TicketService.Get(event.TicketID)
-	if ticket == nil {
-		return nil
-	}
-	content := i18nx.Getf(i18nx.DefaultLocale, "notification.ticketAssigned.line", strs.DefaultIfBlank(ticket.TicketNo, fmt.Sprintf("#%d", ticket.ID)))
-	if title := strings.TrimSpace(ticket.Title); title != "" {
-		content = content + "\n" + title
-	}
-	if reason := strings.TrimSpace(event.Reason); reason != "" {
-		content = content + "\n" + i18nx.Getf(i18nx.DefaultLocale, "notification.ticketAssigned.reason", reason)
-	}
-	_, err := services.NotificationService.CreateAndPush(request.CreateNotificationRequest{
-		RecipientUserID:  event.ToUserID,
-		Title:            i18nx.Get("notification.ticketAssigned.title"),
-		Content:          content,
-		NotificationType: "ticket_assigned",
-		BizType:          "ticket",
-		BizID:            ticket.ID,
-		ActionURL:        fmt.Sprintf("/dashboard/tickets?ticketId=%d", ticket.ID),
-	})
-	if err != nil {
-		slog.Error("create ticket assigned in-app notification failed", "error", err, "ticketId", event.TicketID, "toUserId", event.ToUserID)
-	}
-	return nil
-}
-
 func handleConversationAssignedInAppNotification(ctx context.Context, event events.ConversationAssignedEvent) error {
 	if event.ConversationID <= 0 || event.ToUserID <= 0 {
 		return nil
@@ -80,7 +45,7 @@ func handleConversationAssignedInAppNotification(ctx context.Context, event even
 		NotificationType: "conversation_assigned",
 		BizType:          "conversation",
 		BizID:            conversation.ID,
-		ActionURL:        fmt.Sprintf("/dashboard/conversations?conversationId=%d", conversation.ID),
+		ActionURL:        fmt.Sprintf("/dashboard/conversations?conversation_id=%d", conversation.ID),
 	})
 	if err != nil {
 		slog.Error("create conversation assigned in-app notification failed", "error", err, "conversationId", event.ConversationID, "toUserId", event.ToUserID)