Add an official setting to resize the Codex desktop pet/avatar overlay

Feature request

Please add an official setting to adjust the size of the Codex desktop pet / avatar overlay.

Problem

Custom pets currently appear at a fixed size. On high-resolution displays or larger desktop setups, the pet can feel too small. Users who create or install custom pets have no safe supported way to resize the visible pet.

I tried changing local overlay bounds and then inspecting the rendered avatar layer. The actual size appears to be driven by app-bundled UI/CSS and is re-measured by the overlay. Modifying the signed application bundle or internal app.asar is unsafe on macOS: it breaks the app bundle's sealed resources / code signing and can cause Codex to crash on launch. This makes official support important.

Suggested solution

Add a desktop pet size control in Codex settings and/or the pet context menu.

Possible UI options:

• Small / Medium / Large presets
• Or a scale slider, for example 50% to 200%

Expected behavior:

• Persist the chosen size per user/device.
• Support both built-in pets and custom pets.
• Scale the clickable and draggable area together with the visible pet.
• Keep notification badges and the activity tray aligned after resizing.
• Avoid requiring users to modify signed application files.

Why this matters

This would make the desktop pet more accessible and comfortable across different screen sizes, while giving users a safe customization path that does not risk breaking the Codex desktop app.