Interface size setting: auto, large, medium or small on the world's pixel grid

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

lang/de.lang

@@ -263,6 +263,8 @@ val.medium = Mittel
 val.high = Hoch
 val.normal = Normal
 val.large = Groß
+val.small = Klein
+val.auto_plain = Automatisch
 
 # ---- Namen der Tastenbelegung
 key.cam_forward = Kamera vor