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/ai/runtime/runtime_reply_executor.go

@@ -30,10 +30,19 @@ func newRuntimeReplyExecutor() *runtimeReplyExecutor {
 }
 
 func (e *runtimeReplyExecutor) Run(ctx context.Context, input runtimeReplyRunInput) (*applicationruntime.RunResult, error) {
-	summary, err := applicationruntime.DefaultAgentApplicationService.Run(ctx, applicationruntime.ApplicationRunInput{
-		ConversationID: input.Conversation.ID,
-		MessageID:      input.Message.ID,
-		AIAgentID:      input.AIAgent.ID,
+	config, err := applicationruntime.ResolveRuntimeAIConfig(ctx, input.AIAgent.AIConfigID)
+	if err != nil {
+		return nil, err
+	}
+	// The trigger layer may enrich an anonymous channel conversation with a
+	// business subject resolved from the current message or recent history.
+	// Run the already validated objects so that card/device identity is not lost
+	// by reloading the original guest ownership record from the database.
+	summary, err := applicationruntime.DefaultAgentApplicationService.RunPrepared(ctx, applicationruntime.RunInput{
+		Conversation: input.Conversation,
+		UserMessage:  input.Message,
+		AIAgent:      input.AIAgent,
+		AIConfig:     *config,
 	})
 	return summary, err
 }
@@ -42,12 +51,15 @@ func (e *runtimeReplyExecutor) ResumePendingInterrupt(ctx context.Context, input
 	if input.PendingInterrupt == nil {
 		return nil, fmt.Errorf("pending interrupt is required")
 	}
-	summary, err := applicationruntime.DefaultAgentApplicationService.Resume(ctx, applicationruntime.ApplicationResumeInput{
-		ApplicationRunInput: applicationruntime.ApplicationRunInput{
-			ConversationID: input.Conversation.ID,
-			MessageID:      input.Message.ID,
-			AIAgentID:      input.AIAgent.ID,
-		},
+	config, err := applicationruntime.ResolveRuntimeAIConfig(ctx, input.AIAgent.AIConfigID)
+	if err != nil {
+		return nil, err
+	}
+	summary, err := applicationruntime.DefaultAgentApplicationService.ResumePrepared(ctx, applicationruntime.ResumeInput{
+		Conversation: input.Conversation,
+		UserMessage:  input.Message,
+		AIAgent:      input.AIAgent,
+		AIConfig:     *config,
 		CheckPointID: strings.TrimSpace(input.PendingInterrupt.CheckPointID),
 		ResumeData: map[string]string{
 			strings.TrimSpace(input.PendingInterrupt.InterruptID): strings.TrimSpace(input.Message.Content),