Added sanity check baseline made by claude.

Also changed the location to a panel in VIEW_3D instead of menu.

ui/__init__.py

@@ -0,0 +1,13 @@
+from . import operators, panel, properties
+
+modules = (properties, operators, panel)
+
+
+def register():
+    for module in modules:
+        module.register()
+
+
+def unregister():
+    for module in reversed(modules):
+        module.unregister()