Refactors site to use interactive terminal UI

Moves site from static HTML to a dynamic terminal interface.

This commit represents a major overhaul, introducing:
- A functional terminal emulator implemented in JavaScript.
- Command parsing and execution framework.
- Various terminal commands for navigation and utility functions.
- SASS conversion.

The old CSS and simple HTML are completely removed. A new Hugo theme is implemented.

assets/sass/partials/_global-styles.scss

@@ -0,0 +1,23 @@
+footer[role="contentinfo"] {
+  position: absolute;
+  bottom: 0;
+  right: 0;
+  z-index: 10000;
+  background: #000; // or whatever color you want
+  color: #0f0; // match your terminal green theme
+  padding: 5px;
+  text-align: center;
+  font-family: monospace;
+  border-top: 1px solid #0f0;
+  border-left: 1px solid #0f0;
+  border-top-left-radius: 5px;
+
+  a {
+    color: #0f0;
+    text-decoration: none;
+
+    &:hover {
+      text-decoration: underline;
+    }
+  }
+}