feat: Implement theme toggling and enhance dashboard component theming

This commit introduces a theme toggle functionality in the application header
and improves the visual consistency of dashboard components across different
color schemes.

- Added light/dark mode toggle to  using Mantine's .
- Ensured all  components in  have visible borders in both light and dark modes by adding the  prop.
- Made  colors in  theme-aware, dynamically adjusting their background color based on the active color scheme.

Additionally, this commit includes a large refactoring operation, moving various
component files from  to  and updating
their references.

tailwind.config.js

@@ -1,6 +1,5 @@
 /** @type {import('tailwindcss').Config} */
 module.exports = {
-	darkMode: "class",
 	content: ["./index.html", "./src/**/*.{js,ts,jsx,tsx}"],
 	theme: {
 		extend: {