Add Dogs & Bunny puzzle

Recreate the Dogs & Bunny puzzle with random puzzle generation, difficulty levels, screenshot functionality, and shareable URL parameters.

src/pages/theme-pages/Puzzles.tsx

@@ -55,6 +55,16 @@ const Puzzles = () => {
       difficulty: "Intermediate" as const,
       duration: "5-15 min",
       participants: "1 player"
+    },
+    {
+      id: "dogs-bunny",
+      title: "Dogs & Bunny Puzzle",
+      description: "Guide bunnies to the carrot and the dog to the bone using conditional movement rules. A graph traversal puzzle!",
+      path: "/puzzles/dogs-bunny",
+      tags: ["Graph Theory", "Logic", "Pathfinding", "Animals"],
+      difficulty: "Intermediate" as const,
+      duration: "10-25 min",
+      participants: "1 player"
     }
   ];