Desktop app: hard to turn on fast mode, and no sign of whether it's on

Fast mode is confusing in the Claude desktop app's Code tab, for two reasons.

1. No way to turn it on when starting a conversation.
The new-conversation screen has no fast mode toggle next to the model picker. The fast mode docs only cover:

• /fast in the CLI
• a "Toggle fast mode" command in VS Code
• the fastMode setting in settings.json

None of these explain how to do it in the desktop app. I had to ask Claude inside a session to work it out, and the best answer was "edit settings.json".

2. No sign of whether fast mode is on in a session.
After starting a session, I can't tell whether fast mode is on. This makes it hard to know whether a setting worked, what speed to expect, or what I'm being billed at.

Expected:

• A visible fast mode toggle when starting a conversation, next to the model and effort pickers.
• A persistent label in an active session showing whether fast mode is on (e.g. in the header or next to the model name), which can also be clicked to switch it.
• Docs that explain how fast mode works in the desktop app.

Environment: Claude desktop app (Code tab), macOS