Detach subagents without archiving them (#1612)

* Add detach action for subagents

* Translate detached subagent connection error

* Address subagent detach review feedback

* Fix subagent integration test import

* Focus detached subagents as tabs

packages/client/src/index.ts

@@ -229,6 +229,7 @@ export interface PaseoAgentHandle {
   refetch(requestId?: string): Promise<PaseoAgentRefetchResult | null>;
   send(text: string, options?: PaseoAgentSendOptions): Promise<void>;
   archive(): Promise<{ archivedAt: string }>;
+  detach(): Promise<void>;
   subscribe(handler: (update: PaseoAgentUpdate) => void): () => void;
 }
 
@@ -483,6 +484,9 @@ function createAgentHandleFactory(daemonClient: DaemonClient): AgentHandleFactor
         }
         return result;
       },
+      detach: async () => {
+        await daemonClient.detachAgent(id);
+      },
       subscribe: (handler) =>
         daemonClient.on("agent_update", (message) => {
           const update = message.payload;