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.

src/components/ui/toggle.tsx

@@ -1,47 +0,0 @@
-"use client";
-
-import * as TogglePrimitive from "@radix-ui/react-toggle";
-import { cva, type VariantProps } from "class-variance-authority";
-import type * as React from "react";
-
-import { cn } from "./utils";
-
-const toggleVariants = cva(
-	"inline-flex items-center justify-center gap-2 rounded-md text-sm font-medium hover:bg-muted hover:text-muted-foreground disabled:pointer-events-none disabled:opacity-50 data-[state=on]:bg-accent data-[state=on]:text-accent-foreground [&_svg]:pointer-events-none [&_svg:not([class*='size-'])]:size-4 [&_svg]:shrink-0 focus-visible:border-ring focus-visible:ring-ring/50 focus-visible:ring-[3px] outline-none transition-[color,box-shadow] aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive whitespace-nowrap",
-	{
-		variants: {
-			variant: {
-				default: "bg-transparent",
-				outline:
-					"border border-input bg-transparent hover:bg-accent hover:text-accent-foreground",
-			},
-			size: {
-				default: "h-9 px-2 min-w-9",
-				sm: "h-8 px-1.5 min-w-8",
-				lg: "h-10 px-2.5 min-w-10",
-			},
-		},
-		defaultVariants: {
-			variant: "default",
-			size: "default",
-		},
-	},
-);
-
-function Toggle({
-	className,
-	variant,
-	size,
-	...props
-}: React.ComponentProps<typeof TogglePrimitive.Root> &
-	VariantProps<typeof toggleVariants>) {
-	return (
-		<TogglePrimitive.Root
-			data-slot="toggle"
-			className={cn(toggleVariants({ variant, size, className }))}
-			{...props}
-		/>
-	);
-}
-
-export { Toggle, toggleVariants };