Translate Python log messages + fix rhinopanel import in PROJECTS

- startup.py: all user-visible messages translated to English
- panel_base.py: icon/rendering log messages translated
- toolbar.py: display mode check messages translated
- Global: Panel registered/opened/listener-active across all modules
- Fix: elemente.py and other files with stale 'import rhinopanel'
  were missing from PROJECTS sync — now properly copied

rhino/begin_cmd_hook.py

@@ -44,7 +44,7 @@ def _on_begin_command(sender, e):
                 Rhino.UI.Panels.FocusPanel(guid)
             except Exception: pass
             if sc.sticky.get(_VERBOSE_KEY):
-                print("[BEGIN-CMD] Gestaltung-Panel geoeffnet/fokussiert")
+                print("[BEGIN-CMD] Gestaltung-Panel opened/fokussiert")
         except Exception as ex:
             print("[BEGIN-CMD] OpenPanel:", ex)
             try: