fix: load messages on mount to prevent empty chat and sync valid task persistence types

packages/server/src/api-types.ts

@@ -16,6 +16,8 @@ export interface Task {
   status: TaskStatus
   timestamp: number
   messageIds?: string[] // IDs of messages associated with this task
+  taskSessionId?: string
+  archived?: boolean
 }
 
 export interface SessionTasks {