feat: 优化会话列表消息格式，添加会话切换提示

src/command/handlers/session_query.rs

@@ -71,10 +71,24 @@ async fn handle_list_sessions(
     let sessions_json =
         serde_json::to_string(&summaries).map_err(|e| CommandError::new("SERIALIZE_ERROR", e.to_string()))?;
 
+    // 构建可读的会话列表消息
     let message = if summaries.is_empty() {
         "No sessions found.".to_string()
     } else {
-        format!("Found {} session(s)", summaries.len())
+        let mut lines = vec![format!("Found {} session(s):", summaries.len())];
+        for summary in &summaries {
+            let archived_info = summary
+                .archived_at
+                .map(|_| " [archived]")
+                .unwrap_or("");
+            lines.push(format!(
+                "  - {}: {}{}",
+                summary.session_id, summary.title, archived_info
+            ));
+        }
+        lines.push("".to_string());
+        lines.push("Use /use <session_id> to switch to a session".to_string());
+        lines.join("\n")
     };
 
     Ok(CommandResponse::success(ctx.request_id)

src/gateway/processor.rs

@@ -10,6 +10,7 @@ use crate::command::handler::CommandRouter;
 use crate::command::handlers::save_session::SaveSessionCommandHandler;
 use crate::command::handlers::session::SessionCommandHandler;
 use crate::command::handlers::session_query::SessionQueryCommandHandler;
+use crate::command::Command;
 use crate::config::LLMProviderConfig;
 use crate::gateway::agent_prompt_provider::AgentPromptProvider;
 use crate::skills::SkillPromptProvider;
@@ -124,17 +125,32 @@ impl InboundProcessor {
             let cmd_ctx = crate::command::context::CommandContext::new(&inbound.channel, &inbound.channel)
                 .with_session_id(&inbound.chat_id);
 
+            // 记录是否是创建会话命令（用于后续自动切换）
+            let is_create_session = matches!(cmd, Command::CreateSession { .. });
+
             let response = self.command_router.dispatch_with_response(cmd, cmd_ctx).await;
 
             // 发送响应给用户
             if response.success {
+                // 如果是创建会话，更新 chat_id 到新会话
+                let target_chat_id = if let Some(session_id) = response.metadata.get("session_id") {
+                    if is_create_session {
+                        // 自动切换到新会话
+                        session_id.clone()
+                    } else {
+                        inbound.chat_id.clone()
+                    }
+                } else {
+                    inbound.chat_id.clone()
+                };
+
                 // 提取响应消息
                 for msg in &response.messages {
                     if let Err(error) = self
                         .bus
                         .publish_outbound(OutboundMessage::assistant(
                             inbound.channel.clone(),
-                            inbound.chat_id.clone(),
+                            target_chat_id.clone(),
                             msg.content.clone(),
                             None,
                             inbound.forwarded_metadata.clone(),