Initial commit: Agile Project Manager

- Complete React + TypeScript application with Vite
- Dashboard with charts and metrics visualization
- Kanban board with drag-and-drop functionality
- Product backlog management with user stories
- Sprint planning and tracking features
- Comprehensive UI component library (shadcn/ui)
- Tailwind CSS styling with dark mode support
- Context-based state management
- Mock data for immediate testing and demonstration

components/ui/skeleton.tsx

@@ -0,0 +1,13 @@
+import { cn } from "./utils";
+
+function Skeleton({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="skeleton"
+      className={cn("bg-accent animate-pulse rounded-md", className)}
+      {...props}
+    />
+  );
+}
+
+export { Skeleton };