Refactor interactive links

Update interactive links to generate unique URLs and categorize the pebble placement interactive under "Puzzles" while removing it from "DSA" and "Games".

src/pages/PebblePlacementGamePage.tsx

@@ -0,0 +1,7 @@
+import PebblePlacementGame from "@/components/PebblePlacementGame";
+
+const PebblePlacementGamePage = () => {
+  return <PebblePlacementGame showSocialShare={true} />;
+};
+
+export default PebblePlacementGamePage;

src/pages/theme-pages/Puzzles.tsx

@@ -6,6 +6,16 @@ const Puzzles = () => {
   const navigate = useNavigate();
   
   const puzzles = [
+    {
+      id: "pebble-placement",
+      title: "Pebble Placement Strategy Game",
+      description: "Place pebbles following specific rules to reach the furthest position possible. A strategic optimization puzzle!",
+      path: "/puzzles/pebble-placement",
+      tags: ["Strategy", "Logic", "Placement", "Optimization"],
+      difficulty: "Intermediate" as const,
+      duration: "5-15 min",
+      participants: "1 player"
+    },
     {
       id: "sikinia-parliament",
       title: "Parliament of Sikinia Puzzle",