fix: preserve initialTodos when overwriting cline messages

The todo list was not being rendered in new subtasks because the overwriteClineMessages method was calling restoreTodoListForTask unconditionally, which would overwrite any initialTodos passed during task construction. This fix only restores the todo list from messages if there are no existing todos.

Author: hannesrudolph

src/core/task/Task.ts

@@ -558,7 +558,10 @@ export class Task extends EventEmitter<ClineEvents> {
 
 	public async overwriteClineMessages(newMessages: ClineMessage[]) {
 		this.clineMessages = newMessages
-		restoreTodoListForTask(this)
+		// Only restore todo list from messages if we don't already have initialTodos
+		if (!this.todoList || this.todoList.length === 0) {
+			restoreTodoListForTask(this)
+		}
 		await this.saveClineMessages()
 	}