Fix TypeScript compilation errors in native mode session management

packages/ui/src/stores/session-actions.ts

@@ -5,7 +5,7 @@ import { instances, activeInstanceId } from "./instances"
 import { addTaskMessage } from "./task-actions"
 
 import { addRecentModelPreference, setAgentModelPreference, getAgentModelPreference } from "./preferences"
-import { sessions, withSession, providers, setActiveParentSession, setActiveSession } from "./session-state"
+import { sessions, setSessions, withSession, providers, setActiveParentSession, setActiveSession } from "./session-state"
 import { getDefaultModel, isModelValid } from "./session-models"
 import { updateSessionInfo } from "./message-v2/session-info"
 import { messageStoreBus } from "./message-v2/bus"
@@ -25,6 +25,8 @@ import { QwenOAuthManager } from "../lib/integrations/qwen-oauth"
 import { getUserScopedKey } from "../lib/user-storage"
 import { loadSkillDetails } from "./skills"
 import { serverApi } from "../lib/api-client"
+import { nativeSessionApi } from "../lib/lite-mode"
+import type { Session } from "../types/session"
 
 const log = getLogger("actions")
 
@@ -1936,13 +1938,16 @@ async function updateSessionAgent(instanceId: string, sessionId: string, agent:
     }
   })
 
+
   if (agent && shouldApplyModel && !agentModelPreference) {
     await setAgentModelPreference(instanceId, agent, nextModel)
   }
 
-  const isNative = instance.binaryPath === "__nomadarch_native__"
+  const instance = instances().get(instanceId)
+  const isNative = instance?.binaryPath === "__nomadarch_native__"
   if (isNative) {
     await nativeSessionApi.updateSession(instanceId, sessionId, { agent })
+
   }
 
   if (shouldApplyModel) {
@@ -2168,7 +2173,7 @@ async function forkSession(instanceId: string, sessionId: string): Promise<strin
       parentId: session.parentId || session.id,
       agent: session.agent,
       model: session.model,
-      skills: [...session.skills],
+      skills: [...(session.skills || [])],
       version: forkedVersion,
       time: forkedTime,
       revert: forkedRevert