Feat/v05 UI redesign

[gcharest]

This pull request introduces a major UI/UX redesign, migrating the project from Bootstrap to a modern stack centered around Tailwind CSS and Reka UI. It removes Bootstrap and Bootstrap Icons, adds Tailwind and related plugins, and introduces new base UI components, resulting in a more maintainable, accessible, and visually consistent codebase. Additionally, it deprecates previous incremental release plans in favor of a comprehensive redesign.

UI Framework Migration and Modernization

• Removed all Bootstrap and Bootstrap Icons dependencies from package.json, src/assets/scss/styles.scss, and related test files; added Tailwind CSS, Reka UI, Lucide icons, and supporting PostCSS plugins to the project dependencies and configuration. [1] [2] [3] [4] [5] [6] [7]
• Updated the main stylesheet to use Tailwind CSS and defined a custom theme with semantic color variables and accessibility improvements in src/assets/main.css.

Component Redesign and New Base Components

• Replaced legacy navigation and footer components with new layout components (BaseTopBar, BaseBottomNav, BaseSideRail) and refactored the app shell in src/App.vue for a modern, responsive layout with dark mode support.
• Introduced new base UI components: BaseAlert.vue and BaseBadge.vue for consistent alert and badge styling using Tailwind and Lucide icons. [1] [2]

Refactoring Existing Components

• Refactored action buttons in DatasetUpdateProgress.vue and StorageQuotaDisplay.vue to use the new BaseButton component and Tailwind utility classes, removing custom button CSS and improving layout responsiveness. [1] [2] [3] [4] [5] [6] [7]

Release Plan Updates

• Deprecated the incremental performance and UI polish release plans (v0.4-pwa-optimization.md and v0.5-ui-polish.md) in favor of a unified, comprehensive redesign as described in the new v0.5 release plan. [1] [2]