Update Project

Assets/Scripts/Core/IDeathHandler.cs

@@ -0,0 +1,16 @@
+namespace FlappyBird.Core
+{
+    /// <summary>
+    /// Contract for the death-handling service.
+    /// Implementations react to a GameOver state transition and apply
+    /// all necessary side-effects (freeze bird, clear pipes, etc.).
+    /// </summary>
+    public interface IDeathHandler
+    {
+        /// <summary>
+        /// Executes all death side-effects.
+        /// Called by the subscriber wired up in the installer.
+        /// </summary>
+        void HandleDeath();
+    }
+}