Feature: Add thread rename support to Thread / Adapter interface

[arvinxx]

Background

We're building an IM bot integration on top of Chat SDK where agents respond to @mentions in threads. After the agent replies, we'd like to rename the thread to a meaningful summary (e.g., the topic of the conversation), providing better UX for users browsing threads.

Current Behavior

The Thread interface has no method for updating the thread name. The Adapter interface also lacks any thread-rename capability.

Proposed API

Add a renameThread method to the Adapter interface and a convenience method on Thread:

// Adapter
interface Adapter {
  renameThread?(threadId: string, name: string): Promise<void>;
}

// Thread
interface Thread {
  setName(name: string): Promise<void>;
}

Platform Support

• Discord: PATCH /channels/{thread.id} with { name } — supported natively
• Slack: conversations.rename API — supported for channels/threads

Use Case

After an agent finishes processing a user's message, we want to set the thread name to a short summary of the conversation, making it easier for users to identify threads at a glance.