feat: add Spinner, EmptyState, StatCard (v0.4.0)

Harvested from delta. StatCard integrates AnimatedNumber + intent colors;
EmptyState and Spinner generalize delta's local versions for reuse.

DESIGN.md

@@ -40,7 +40,8 @@ Never Inter, Arial, or system defaults for headings (Impeccable anti-slop rule).
 5. Don't nest cards inside cards. Don't put gray text on colored fills.
 
 ## Included
-Primitives: Button, Card, Input, Badge, Dialog, DropdownMenu, Table, Toaster.
+Primitives: Button, Card, Input, Select (themed Radix popover), Textarea, Label,
+Badge, Dialog, DropdownMenu, Table, Toaster, Spinner, EmptyState, StatCard.
 Motion: FadeIn, Stagger/StaggerItem.
 Animated: AnimatedNumber, SpotlightCard.
 Blocks: AppShell, CommandPalette, Hero, FeatureGrid, Pricing.

package.json

@@ -1,7 +1,7 @@
 {
   "name": "@jason/ui-kit",
-  "version": "0.3.0",
+  "version": "0.4.0",
-  "description": "Shared design foundation — branded tokens, Tailwind preset, shadcn-style components, motion, app shell + marketing blocks. Guarded by Impeccable.",
+  "description": "Shared design foundation \u2014 branded tokens, Tailwind preset, shadcn-style components, motion, app shell + marketing blocks. Guarded by Impeccable.",
   "type": "module",
   "license": "MIT",
   "author": "Jason <jason@messagepoint.tv>",

src/components/empty-state.tsx

@@ -0,0 +1,31 @@
+import * as React from "react";
+import { Inbox, type LucideIcon } from "lucide-react";
+import { cn } from "../lib/cn";
+
+export interface EmptyStateProps {
+  icon?: LucideIcon;
+  title: string;
+  hint?: string;
+  /** Optional call-to-action (e.g. a <Button>). */
+  action?: React.ReactNode;
+  className?: string;
+}
+
+/** Friendly placeholder for empty lists / no-data states. */
+export function EmptyState({ icon: Icon = Inbox, title, hint, action, className }: EmptyStateProps) {
+  return (
+    <div
+      className={cn(
+        "flex flex-col items-center justify-center gap-3 rounded-lg border border-dashed border-border bg-surface/50 px-6 py-12 text-center",
+        className
+      )}
+    >
+      <Icon className="size-7 text-muted" />
+      <div>
+        <p className="font-display font-medium text-text">{title}</p>
+        {hint && <p className="mt-1 text-sm text-muted">{hint}</p>}
+      </div>
+      {action}
+    </div>
+  );
+}

src/components/spinner.tsx

@@ -0,0 +1,21 @@
+import * as React from "react";
+import { Loader2 } from "lucide-react";
+import { cn } from "../lib/cn";
+
+export interface SpinnerProps {
+  /** Optional text shown next to the spinner. */
+  label?: string;
+  /** Icon size in px. */
+  size?: number;
+  className?: string;
+}
+
+/** Inline loading indicator. */
+export function Spinner({ label, size = 18, className }: SpinnerProps) {
+  return (
+    <div className={cn("flex items-center gap-2 text-muted", className)} role="status" aria-live="polite">
+      <Loader2 size={size} className="animate-spin text-brand" />
+      {label && <span className="text-sm">{label}</span>}
+    </div>
+  );
+}

src/components/stat-card.tsx

@@ -0,0 +1,52 @@
+import * as React from "react";
+import { AnimatedNumber } from "../animated/animated-number";
+import { cn } from "../lib/cn";
+
+export type StatIntent = "default" | "brand" | "success" | "warning" | "danger";
+
+const INTENT: Record<StatIntent, string> = {
+  default: "text-text",
+  brand: "text-brand",
+  success: "text-success",
+  warning: "text-warning",
+  danger: "text-danger",
+};
+
+export interface StatCardProps {
+  label: string;
+  /** Static value; ignored when `animate` is provided. */
+  value?: React.ReactNode;
+  /** Animated count-up target. */
+  animate?: number;
+  /** Formatter for the animated value (e.g. n => `${n}%`). */
+  format?: (n: number) => string;
+  sub?: React.ReactNode;
+  intent?: StatIntent;
+  icon?: React.ReactNode;
+  className?: string;
+}
+
+/** Dashboard metric tile. Pass `animate` for a count-up, or `value` for static. */
+export function StatCard({
+  label,
+  value,
+  animate,
+  format,
+  sub,
+  intent = "default",
+  icon,
+  className,
+}: StatCardProps) {
+  return (
+    <div className={cn("rounded-lg border border-border bg-surface p-4 shadow-sm", className)}>
+      <div className="flex items-center justify-between gap-2">
+        <p className="text-xs font-medium uppercase tracking-wide text-muted">{label}</p>
+        {icon && <span className="text-muted [&_svg]:size-4">{icon}</span>}
+      </div>
+      <p className={cn("mt-1 font-display text-2xl font-bold", INTENT[intent])}>
+        {animate != null ? <AnimatedNumber value={animate} format={format} /> : value}
+      </p>
+      {sub && <p className="mt-0.5 text-xs text-muted">{sub}</p>}
+    </div>
+  );
+}

src/index.ts

@@ -21,6 +21,9 @@ export {
 } from "./components/dropdown-menu";
 export { Table, TableHeader, TableBody, TableRow, TableHead, TableCell } from "./components/table";
 export { Toaster, toast } from "./components/toast";
+export { Spinner, type SpinnerProps } from "./components/spinner";
+export { EmptyState, type EmptyStateProps } from "./components/empty-state";
+export { StatCard, type StatCardProps, type StatIntent } from "./components/stat-card";
 
 // Motion
 export { FadeIn, Stagger, StaggerItem, staggerContainer, staggerItem, motion } from "./motion";