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/input-otp.tsx

@@ -1,77 +0,0 @@
-"use client";
-
-import { OTPInput, OTPInputContext } from "input-otp";
-import { MinusIcon } from "lucide-react";
-import * as React from "react";
-
-import { cn } from "./utils";
-
-function InputOTP({
-	className,
-	containerClassName,
-	...props
-}: React.ComponentProps<typeof OTPInput> & {
-	containerClassName?: string;
-}) {
-	return (
-		<OTPInput
-			data-slot="input-otp"
-			containerClassName={cn(
-				"flex items-center gap-2 has-disabled:opacity-50",
-				containerClassName,
-			)}
-			className={cn("disabled:cursor-not-allowed", className)}
-			{...props}
-		/>
-	);
-}
-
-function InputOTPGroup({ className, ...props }: React.ComponentProps<"div">) {
-	return (
-		<div
-			data-slot="input-otp-group"
-			className={cn("flex items-center gap-1", className)}
-			{...props}
-		/>
-	);
-}
-
-function InputOTPSlot({
-	index,
-	className,
-	...props
-}: React.ComponentProps<"div"> & {
-	index: number;
-}) {
-	const inputOTPContext = React.useContext(OTPInputContext);
-	const { char, hasFakeCaret, isActive } = inputOTPContext?.slots[index] ?? {};
-
-	return (
-		<div
-			data-slot="input-otp-slot"
-			data-active={isActive}
-			className={cn(
-				"data-[active=true]:border-ring data-[active=true]:ring-ring/50 data-[active=true]:aria-invalid:ring-destructive/20 dark:data-[active=true]:aria-invalid:ring-destructive/40 aria-invalid:border-destructive data-[active=true]:aria-invalid:border-destructive dark:bg-input/30 border-input relative flex h-9 w-9 items-center justify-center border-y border-r text-sm bg-input-background transition-all outline-none first:rounded-l-md first:border-l last:rounded-r-md data-[active=true]:z-10 data-[active=true]:ring-[3px]",
-				className,
-			)}
-			{...props}
-		>
-			{char}
-			{hasFakeCaret && (
-				<div className="pointer-events-none absolute inset-0 flex items-center justify-center">
-					<div className="animate-caret-blink bg-foreground h-4 w-px duration-1000" />
-				</div>
-			)}
-		</div>
-	);
-}
-
-function InputOTPSeparator({ ...props }: React.ComponentProps<"div">) {
-	return (
-		<div data-slot="input-otp-separator" aria-hidden="true" {...props}>
-			<MinusIcon />
-		</div>
-	);
-}
-
-export { InputOTP, InputOTPGroup, InputOTPSlot, InputOTPSeparator };