Add Plate Swap Puzzle with full functionality and attribution

src/pages/theme-pages/Puzzles.tsx

@@ -6,6 +6,16 @@ const Puzzles = () => {
   const navigate = useNavigate();
   
   const puzzles = [
+    {
+      id: "plate-swap",
+      title: "The Plate Swap Puzzle",
+      description: "Arrange plates around a circular table so each person has their own plate. A challenging permutation puzzle!",
+      path: "/puzzles/plate-swap",
+      tags: ["Logic", "Permutation", "Strategy"],
+      difficulty: "Advanced" as const,
+      duration: "10-30 min",
+      participants: "1 player"
+    },
     {
       id: "knights-puzzle",
       title: "Knights Exchange Puzzle",