feat: add dark/light mode toggle to navigation, enhance sidebar styles, and update layout colors

- Implemented a button for toggling between dark and light modes in the navigation component.
- Adjusted sidebar width and improved active link indicators with shadows for better visibility.
- Updated layout colors for a more vibrant and cohesive theme, focusing on a "Pure Neutral Black + Neon" aesthetic.
- Refined ambient gradient accents for improved content readability across devices.
- Enhanced console layout for better responsiveness and user experience.

.claude/settings.local.json

@@ -0,0 +1,10 @@
+{
+  "permissions": {
+    "allow": [
+      "WebFetch(domain:raw.githubusercontent.com)"
+    ],
+    "additionalDirectories": [
+      "C:\\Users\\Owner\\.ssh"
+    ]
+  }
+}