Release 0.3.5

Lazy load issue tab data

Add global loading feedback

Fix refresh and preview backgrounds

Add URL-based navigation

Add inbox activity tracking

Add 0.3.3 release notes

Add light and dark theme toggle

Revert "Add Storybook header prototype"

Revert "Refine Storybook shell layout"

Revert "Add Storybook header breadcrumbs"

Add Storybook header breadcrumbs

Refine Storybook shell layout

Add Storybook header prototype

Запрос на слияние 'codex/feature/0013' (#7) из codex/feature/0013 в master

Polish markdown preview tables and links

Fix Mermaid block scrolling behavior

Add Mermaid support to markdown preview

Refine markdown preview styling

Polish markdown preview tables and links