Add Inline search bar option, native titlebar option, and movable floating search bar

What variant of Codex are you using?

Windows App

What feature would you like to see?

Added options to:

• use the native title bar
• inline the search box
• move the floating search bar

This would addressing this issue #16215 that I've also encountered
<img width="623" height="110" alt="Image" src="https://github.com/user-attachments/assets/0da1d2f5-d680-4952-9234-cf29e87a8fc1" />

in the Windows Desktop App downloaded from the Microsoft Store in Windows 11 on Codex version 26.422.39044.

Additional information

_No response_