Add Unity importer scripts and handle CityJSON transform

scripts_unity/Editor/GeoBoundsDebug.cs

@@ -0,0 +1,35 @@
+using UnityEditor;
+using UnityEngine;
+
+public static class GeoBoundsDebug
+{
+    [MenuItem("Tools/Geo/Print Selected Mesh Bounds")]
+    public static void PrintSelectedMeshBounds()
+    {
+        foreach (var go in Selection.gameObjects)
+        {
+            var mf = go.GetComponent<MeshFilter>();
+            if (mf == null || mf.sharedMesh == null)
+            {
+                Debug.Log($"{go.name}: no MeshFilter/mesh");
+                continue;
+            }
+
+            var mesh = mf.sharedMesh;
+            var b = mesh.bounds;
+
+            // Mesh bounds are in local mesh space
+            var centerWorld = go.transform.TransformPoint(b.center);
+
+            // Approximate size in world space (ignores rotation, good enough for diagnosis)
+            var lossy = go.transform.lossyScale;
+            var sizeWorld = new Vector3(
+                Mathf.Abs(b.size.x * lossy.x),
+                Mathf.Abs(b.size.y * lossy.y),
+                Mathf.Abs(b.size.z * lossy.z)
+            );
+
+            Debug.Log($"{go.name}: worldCenter={centerWorld}, worldSize={sizeWorld}");
+        }
+    }
+}