Add Hunter NPC and Teleporter features with associated prefabs and effects

Assets/Scripts/Infrastructure/Unity/ThemeManager.cs

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+using UnityEngine;
+
+namespace Infrastructure.Unity
+{
+    public static class ThemeManager
+    {
+        public struct ThemePalette
+        {
+            public Color StableColor;
+            public Color WarningColor;
+            public Color BackgroundColor; // Not used yet but good to have
+        }
+
+        public static ThemePalette CurrentTheme { get; set; } = DefaultTheme;
+
+        public static ThemePalette DefaultTheme => new ThemePalette
+        {
+            StableColor = new Color(0.2f, 0.2f, 0.2f),
+            WarningColor = new Color(1f, 0.2f, 0.2f)
+        };
+
+        public static ThemePalette CyberpunkTheme => new ThemePalette
+        {
+            StableColor = new Color(0.1f, 0.1f, 0.3f), // Dark Blue
+            WarningColor = new Color(1f, 0f, 1f)       // Neon Magenta
+        };
+
+        public static ThemePalette GoldenTheme => new ThemePalette
+        {
+            StableColor = new Color(0.3f, 0.3f, 0.1f), // Dark Gold
+            WarningColor = new Color(1f, 0.8f, 0f)     // Gold
+        };
+
+        public static ThemePalette GetTheme(int highScore)
+        {
+            if (highScore >= 500) return GoldenTheme;
+            if (highScore >= 100) return CyberpunkTheme;
+            return DefaultTheme;
+        }
+    }
+}