feat: migrate Hugo Bootstrap theme to latest Hugo with Tailwind CSS and refactor codebase

* replace Bootstrap-based styling with Tailwind CSS
* update theme compatibility for latest Hugo version
* refactor templates and partials
* fix outdated code and broken components
* improve project structure and maintainability
* optimize styling and frontend build setup

.markdownlint.json

@@ -0,0 +1,5 @@
+{
+  "MD033": false,
+  "MD034": false,
+  "MD013": false
+}