Display YOLO mode permissions if set when launching TUI

[canvrno-oai]

• When launching the TUI client, if YOLO mode is enabled, display this in the header.
• Eligibility is determined by approval_policy = "never" and sandbox_mode = "danger-full-access"

[etraut-openai]

Implementation looks good!

A few thoughts. I don't feel strongly about either, so feel free to ignore.

1. I wonder if we should use lowercase for "yolo". It doesn't appear as uppercase anywhere else in our docs or code, and most people talk about it in lowercase.
2. I wonder if we should add "/permissions to change" at the end of the line, consistent with the "/model to change" two lines above it?

[canvrno-oai]

Implementation looks good!

A few thoughts. I don't feel strongly about either, so feel free to ignore.

1. I wonder if we should use lowercase for "yolo". It doesn't appear as uppercase anywhere else in our docs or code, and most people talk about it in lowercase.
2. I wonder if we should add "/permissions to change" at the end of the line, consistent with the "/model to change" two lines above it?

Both are good points- I'll do a followup for these but would like to get this in for now to satisfy the request and prevent more CI retry cycles.