Support dynamic 2–8 player Space Shooter from selected pods.

Replace the fixed left/right split with selectable pod slots and a scalable grid layout so player count follows the chosen pods.

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/sprite_atlas.gd

@@ -25,6 +25,18 @@ static func named(name: String) -> AtlasTexture:
 			return region(211, 941, 99, 75)
 		"playerShip1_orange":
 			return region(247, 84, 99, 75)
+		"playerShip1_green":
+			return region(237, 377, 99, 75)
+		"playerShip1_red":
+			return region(224, 832, 99, 75)
+		"playerShip2_blue":
+			return region(112, 791, 112, 75)
+		"playerShip2_orange":
+			return region(112, 716, 112, 75)
+		"playerShip2_green":
+			return region(112, 866, 112, 75)
+		"playerShip2_red":
+			return region(0, 941, 112, 75)
 		"laserBlue01":
 			return region(856, 421, 9, 54)
 		"laserRed01":