Replace Bootstrap with Tailwind CSS

[wendellmva]

Summary

Replace the legacy Bootstrap 3.4.1 + jQuery + Office UI Fabric frontend with Tailwind CSS.

Current Stack (to remove)

• Bootstrap 3.4.1
• jQuery 3.5.1
• Office UI Fabric Core 11.0.0

New Stack

• Tailwind CSS (via standalone CLI - no npm required)
• Alpine.js 3.x (upgrade from 2.8.1)
• Lucide icons (replace Office UI Fabric icons)

Tasks

• Set up Tailwind CSS standalone CLI build
• Create tailwind.config.js
• Create Styles/input.css with Tailwind directives
• Migrate _Layout.cshtml to Tailwind classes
• Migrate Index.cshtml (package search page)
• Migrate Package.cshtml (package details page)
• Migrate Upload.cshtml (upload instructions)
• Replace Office UI Fabric icons with Lucide
• Update libman.json to remove old libraries
• Delete old wwwroot/css/site.css
• Modernize wwwroot/js/site.js (remove IE detection)
• Upgrade Alpine.js to 3.x

Component Migration

Bootstrap	Tailwind
.navbar-inverse	bg-slate-900 text-white
.btn .btn-default	px-4 py-2 bg-white border rounded
.container	max-w-7xl mx-auto px-4
.form-control	w-full px-3 py-2 border rounded-md

Files to Modify

• src/BaGet.Web/libman.json
• src/BaGet.Web/Pages/Shared/_Layout.cshtml
• src/BaGet.Web/Pages/Index.cshtml
• src/BaGet.Web/Pages/Package.cshtml
• src/BaGet.Web/Pages/Upload.cshtml
• src/BaGet.Web/wwwroot/css/site.css
• src/BaGet.Web/wwwroot/js/site.js

Dependencies

• Depends on .NET 9 upgrade