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/switch.tsx

@@ -1,31 +0,0 @@
-"use client";
-
-import * as SwitchPrimitive from "@radix-ui/react-switch";
-import type * as React from "react";
-
-import { cn } from "./utils";
-
-function Switch({
-	className,
-	...props
-}: React.ComponentProps<typeof SwitchPrimitive.Root>) {
-	return (
-		<SwitchPrimitive.Root
-			data-slot="switch"
-			className={cn(
-				"peer data-[state=checked]:bg-primary data-[state=unchecked]:bg-switch-background focus-visible:border-ring focus-visible:ring-ring/50 dark:data-[state=unchecked]:bg-input/80 inline-flex h-[1.15rem] w-8 shrink-0 items-center rounded-full border border-transparent transition-all outline-none focus-visible:ring-[3px] disabled:cursor-not-allowed disabled:opacity-50",
-				className,
-			)}
-			{...props}
-		>
-			<SwitchPrimitive.Thumb
-				data-slot="switch-thumb"
-				className={cn(
-					"bg-card dark:data-[state=unchecked]:bg-card-foreground dark:data-[state=checked]:bg-primary-foreground pointer-events-none block size-4 rounded-full ring-0 transition-transform data-[state=checked]:translate-x-[calc(100%-2px)] data-[state=unchecked]:translate-x-0",
-				)}
-			/>
-		</SwitchPrimitive.Root>
-	);
-}
-
-export { Switch };