Add Next.js frontend PWA

- Pages: login, register, tasks list, task detail
- Components: TaskCard, TaskForm, GroupSelector, StatusBadge, Header
- Tailwind CSS, dark/light mode, PWA manifest
- Running on :3001 via systemd

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/tasks/components/StatusBadge.tsx

@@ -0,0 +1,24 @@
+"use client";
+
+interface StatusBadgeProps {
+  status: string;
+  size?: "sm" | "md";
+}
+
+const STATUS_MAP: Record<string, { label: string; bg: string; text: string }> = {
+  pending: { label: "Ceka", bg: "bg-yellow-100 dark:bg-yellow-900/30", text: "text-yellow-800 dark:text-yellow-300" },
+  in_progress: { label: "Probiha", bg: "bg-blue-100 dark:bg-blue-900/30", text: "text-blue-800 dark:text-blue-300" },
+  done: { label: "Hotovo", bg: "bg-green-100 dark:bg-green-900/30", text: "text-green-800 dark:text-green-300" },
+  cancelled: { label: "Zruseno", bg: "bg-gray-100 dark:bg-gray-800/30", text: "text-gray-600 dark:text-gray-400" },
+};
+
+export default function StatusBadge({ status, size = "sm" }: StatusBadgeProps) {
+  const s = STATUS_MAP[status] || STATUS_MAP.pending;
+  const sizeClass = size === "sm" ? "px-2 py-0.5 text-xs" : "px-3 py-1 text-sm";
+
+  return (
+    <span className={`inline-flex items-center rounded-full font-medium ${s.bg} ${s.text} ${sizeClass}`}>
+      {s.label}
+    </span>
+  );
+}