Fix game over restart logic and update README

process_cover.py

@@ -0,0 +1,22 @@
+from PIL import Image
+
+# Open the new cover image
+img = Image.open('bg.png')
+
+# Resize to 128x128 to ensure maximum 256 unique tiles
+img = img.resize((128, 128), Image.Resampling.LANCZOS)
+
+# Create a black 160x144 background
+bg = Image.new('L', (160, 144), color=0)
+
+# Paste the resized image in the center
+bg.paste(img, (16, 8))
+
+# Quantize to 4 colors (indexed mode 'P') for png2asset
+final_img = bg.quantize(colors=4)
+
+# Save the resulting image
+final_img.save('title_bg.png')
+print("title_bg.png created successfully (160x144, indexed).")
+
+