VS Code extension: allow manually renaming existing conversations

Summary

Please add a way to manually rename existing conversations/threads in the VS Code Codex extension.

Problem

Today, thread titles appear to be auto-generated from the first prompt and can remain misleading for the lifetime of the conversation.

A concrete example:

• first message: hello
• auto-generated thread title: Respond to greeting
• later, the conversation becomes a long-running thread about something completely different, but the title stays unchanged

In the VS Code UI, I couldn't find any rename action in the thread list or thread header.

Why this matters

For people who keep longer-lived threads and use Codex heavily in VS Code, titles are part of how we stay organized.
When the title is wrong and can't be edited, it becomes harder to find the right thread later.

Suggested solutions

Any of these would help:

• a Rename action in the thread context menu
• inline renaming from the thread header
• a command-palette action like Codex: Rename Current Thread

Nice-to-have

If manual rename exists, it would also be useful for the manual title to win over future auto-title updates.

Context

This request is specifically about the OpenAI Codex VS Code extension (Codex – OpenAI’s coding agent).