feat(frontend): add shadcn ui primitives and compatibility bridge

vite-frontend/src/components/ui/badge.tsx

@@ -0,0 +1,39 @@
+import * as React from "react";
+import { cva, type VariantProps } from "class-variance-authority";
+
+import { cn } from "@/lib/utils";
+
+const badgeVariants = cva(
+  "inline-flex items-center rounded-full border px-2.5 py-0.5 text-xs font-semibold transition-colors",
+  {
+    variants: {
+      variant: {
+        default: "border-transparent bg-primary text-primary-foreground",
+        secondary: "border-transparent bg-secondary text-secondary-foreground",
+        destructive: "border-transparent bg-danger text-white",
+        outline: "text-foreground",
+        success: "border-transparent bg-success text-white",
+        warning: "border-transparent bg-warning text-white",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+    },
+  },
+);
+
+function Badge({
+  className,
+  variant,
+  ...props
+}: React.ComponentProps<"span"> & VariantProps<typeof badgeVariants>) {
+  return (
+    <span
+      className={cn(badgeVariants({ className, variant }))}
+      data-slot="badge"
+      {...props}
+    />
+  );
+}
+
+export { Badge, badgeVariants };