feat: adopt kumo green ui system

components/ui/button.tsx

@@ -1,50 +1,59 @@
 import * as React from "react";
-import { Slot } from "@radix-ui/react-slot";
-import { cva, type VariantProps } from "class-variance-authority";
+import {
+  Button as KumoButton,
+  LinkButton as KumoLinkButton,
+  type ButtonProps as KumoButtonProps,
+  type LinkButtonProps as KumoLinkButtonProps,
+} from "@cloudflare/kumo/components/button";
 
-import { cn } from "@/lib/utils";
+type ButtonVariant = "default" | "secondary" | "outline" | "ghost" | "destructive";
+type ButtonSize = "default" | "sm" | "lg" | "icon";
 
-const buttonVariants = cva(
-  "inline-flex min-h-11 shrink-0 items-center justify-center gap-2 rounded-md text-sm font-medium transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50 [&_svg]:size-4 [&_svg]:shrink-0",
-  {
-    variants: {
-      variant: {
-        default: "bg-primary text-primary-foreground hover:bg-primary/90",
-        secondary: "bg-secondary text-secondary-foreground hover:bg-secondary/80",
-        outline: "border bg-background hover:bg-accent hover:text-accent-foreground",
-        ghost: "hover:bg-accent hover:text-accent-foreground",
-        destructive: "bg-destructive text-destructive-foreground hover:bg-destructive/90",
-      },
-      size: {
-        default: "h-11 px-4 py-2",
-        sm: "h-9 min-h-9 px-3",
-        lg: "h-12 px-6",
-        icon: "h-11 w-11",
-      },
-    },
-    defaultVariants: {
-      variant: "default",
-      size: "default",
-    },
-  },
-);
+const variantMap: Record<ButtonVariant, KumoButtonProps["variant"]> = {
+  default: "primary",
+  secondary: "secondary",
+  outline: "outline",
+  ghost: "ghost",
+  destructive: "destructive",
+};
 
-export interface ButtonProps
-  extends React.ButtonHTMLAttributes<HTMLButtonElement>,
-    VariantProps<typeof buttonVariants> {
-  asChild?: boolean;
-}
+const sizeMap: Record<ButtonSize, KumoButtonProps["size"]> = {
+  default: "base",
+  sm: "sm",
+  lg: "lg",
+  icon: "base",
+};
 
-export function Button({
-  className,
-  variant,
-  size,
-  asChild = false,
-  ...props
-}: ButtonProps): React.ReactElement {
-  const Comp = asChild ? Slot : "button";
+export type ButtonProps = Omit<KumoButtonProps, "variant" | "size" | "shape"> & {
+  variant?: ButtonVariant;
+  size?: ButtonSize;
+};
 
-  return <Comp className={cn(buttonVariants({ variant, size, className }))} {...props} />;
-}
+export type LinkButtonProps = Omit<KumoLinkButtonProps, "variant" | "size"> & {
+  variant?: ButtonVariant;
+  size?: Exclude<ButtonSize, "icon">;
+};
 
-export { buttonVariants };
+export const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(function Button(
+  { variant = "default", size = "default", ...props },
+  ref,
+): React.ReactElement {
+  const kumoProps = {
+    ref,
+    shape: size === "icon" ? "square" : "base",
+    size: sizeMap[size],
+    variant: variantMap[variant],
+    ...props,
+  } as KumoButtonProps & React.RefAttributes<HTMLButtonElement>;
+
+  return (
+    <KumoButton {...kumoProps} />
+  );
+});
+
+export const LinkButton = React.forwardRef<HTMLAnchorElement, LinkButtonProps>(function LinkButton(
+  { variant = "default", size = "default", ...props },
+  ref,
+): React.ReactElement {
+  return <KumoLinkButton ref={ref} size={sizeMap[size]} variant={variantMap[variant]} {...props} />;
+});