[FEATURE]: (new UI layout) Spacing and font size are inconsistent

Feature hasn't been suggested before.

• I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

1. Font size small

Almost all 14px became 13px, for example:

Old

• "General" section header: 16px
• "Languages" section header: 14px
• Version text (bottom-left): 13px

New

• "General" section header: 15px
• "Languages" section header: 13px
• Version text (bottom-left): 11px

2. Session list spacing inconsistent

Old

New

Even though the new UI uses smaller fonts and higher UI dimensions, the top area now consumes more vertical space, reducing visible sessions per screen

3. Models dialog spacing inconsistent

Old

New

Model names are still 13px but padding is too wide, reducing visible models per screen

PS: The sticky scroll for Provider labels is missing too

Personal opinion:
Beyond these two specific cases (Session list, Model dialog), the overall style of the new UI just feels weird.

The fonts are smaller, and the spacing around them feel inconsistent, which makes everything look even smaller.
On a 1440p monitor at 100% scaling, this makes everything feel a bit straining on my eyes.