idea: Improve model selection bar usability

[kalachx]

Problem Statement

Issue 1: Model selection bar too narrow

• Cannot fit full model names, especially problematic when displaying the same model across different quantizations
• Model names are cut off or truncated

Issue 2: Tooltip visibility

• Model name tooltips don't appear on hover over the selection bar

Issue 3: Selection indication unclear

• Highlight color is nearly invisible against the list background
• Difficult to identify which model is currently selected

Feature Idea

Solution 1: Adjustable/auto width

• Make bar width user-configurable, or auto-expand to fit content

Solution 2: Improved selection highlighting

• Make highlight color clearly visible by default
• Consider user-definable highlight colors