planning: Jan Simple UI Fixes

[dan-homebrew]

Goal

• Fix simple UI issues over next few weeks while Cortex is refactoring
• @imtuyethan to propose

[imtuyethan]

UI bugs

• [x] https://github.com/janhq/jan/issues/3884
• [x] https://github.com/janhq/jan/issues/3883
• [x] https://github.com/janhq/jan/issues/3864

UIUX Enhancement List

Small issues

• [x] https://github.com/janhq/jan/issues/3752
• [x] https://github.com/janhq/jan/issues/3882
• [x] https://github.com/janhq/jan/issues/3812
• [x] https://github.com/janhq/jan/issues/3885
• [x] https://github.com/janhq/jan/issues/3881
• [ ] https://github.com/janhq/jan/issues/3850
• [ ] https://github.com/janhq/jan/issues/3820
• [x] https://github.com/janhq/jan/issues/3815
• [x] https://github.com/janhq/jan/issues/3810
• [ ] https://github.com/janhq/jan/issues/3713

Bigger issues

• [ ] https://github.com/janhq/jan/issues/3537 (related to many bugs reported)
• [ ] https://github.com/janhq/jan/issues/3385 (related to many bugs reported)
• [ ] https://github.com/janhq/jan/issues/3811 (the feature was not implemented correctly)
• [ ] https://github.com/janhq/jan/issues/3738
• [ ] https://github.com/janhq/jan/issues/3676
• [ ] https://github.com/janhq/jan/issues/3519