cli/validator: fix minimum y value

src/cli/validate.py

@@ -25,7 +25,7 @@ def validate_no_invalid_y_values() -> list:
         for marker_set in marker_sets:
             for marker in marker_set.markers:
                 if isinstance(marker, Point):
-                    if marker.y < 0 or marker.y > 255:
+                    if marker.y < -64 or marker.y > 255:
                         result.append(
                             {
                                 "error_type": "invalid_y_value",
@@ -40,7 +40,7 @@ def validate_no_invalid_y_values() -> list:
                 elif isinstance(marker, Track):
                     for i, point in enumerate(marker.points):
                         _, y, _ = point
-                        if y < 0 or y > 255:
+                        if y < -64 or y > 255:
                             result.append(
                                 {
                                     "error_type": "invalid_y_value",

src/marker_sets/overworld/railways.py

@@ -511,7 +511,7 @@ MARKER_SET = MarkerSet(
                 (-756, 25, -218),
                 (-765, 25, -218),
             ],
-        )
+        ),
         Track(
             name="Chikatetsu Kyassuru-sen",
             points=[