fix: make cli compatible with kernel changes

[rupertsworld]

No description provided.

[Copilot]

Pull Request Overview

This PR updates the CLI to be compatible with recent kernel changes by replacing the deprecated Interpreter and Runtime classes with the new unified Kernel class. The changes simplify the code structure while maintaining the same functionality.

Key changes:

• Replace Interpreter and Runtime with unified Kernel class
• Update event listener names to match new kernel API
• Remove redundant message state updates

[Copilot]

The setMessages call was removed from sendMessage function, but it's still present in the message event handler. This creates inconsistent state update patterns - messages are only updated when the kernel emits an event, not immediately when sending. Consider if immediate state update is needed for better UX.

Suggested change

	function sendMessage(msg: Message) {
	function sendMessage(msg: Message) {
	setMessages((prevMessages) => [...prevMessages, msg]);