refactor(shared): move shared ui components to share/view/ui without subfolders

src/shared/view/ui/Button.tsx

@@ -0,0 +1,47 @@
+import * as React from 'react';
+import { cva, type VariantProps } from 'class-variance-authority';
+import { cn } from '../../../lib/utils';
+
+// Keep visual variants centralized so all button usages stay consistent.
+const buttonVariants = cva(
+  'inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0',
+  {
+    variants: {
+      variant: {
+        default: 'bg-primary text-primary-foreground shadow hover:bg-primary/90',
+        destructive:
+          'bg-destructive text-destructive-foreground shadow-sm hover:bg-destructive/90',
+        outline:
+          'border border-input bg-background shadow-sm hover:bg-accent hover:text-accent-foreground',
+        secondary: 'bg-secondary text-secondary-foreground shadow-sm hover:bg-secondary/80',
+        ghost: 'hover:bg-accent hover:text-accent-foreground',
+        link: 'text-primary underline-offset-4 hover:underline',
+      },
+      size: {
+        default: 'h-9 px-4 py-2',
+        sm: 'h-8 rounded-md px-3 text-xs',
+        lg: 'h-10 rounded-md px-8',
+        icon: 'h-9 w-9',
+      },
+    },
+    defaultVariants: {
+      variant: 'default',
+      size: 'default',
+    },
+  }
+);
+
+type ButtonProps = React.ButtonHTMLAttributes<HTMLButtonElement> &
+  VariantProps<typeof buttonVariants>;
+
+const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
+  ({ className, variant, size, ...props }, ref) => {
+    return (
+      <button className={cn(buttonVariants({ variant, size, className }))} ref={ref} {...props} />
+    );
+  }
+);
+
+Button.displayName = 'Button';
+
+export { Button, buttonVariants };