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/massstab.py

@@ -156,7 +156,7 @@ def _detect_dpi():
         if dpi < 30.0 or dpi > 600.0:
             print("[MASSSTAB] auto-detect: DPI {:.1f} ausserhalb 30..600 -> ignoriert".format(dpi))
             return None
-        print("[MASSSTAB] DPI auto-detected: {:.1f} physisch (Bildschirm {:.0f}x{:.0f}px / {:.1f}x{:.1f}mm, logisch {:.0f}x{:.0f})".format(
+        print("[MASSSTAB] DPI auto-detected: {:.1f} physical (screen {:.0f}x{:.0f}px / ... logical {:.0f}x{:.0f})".format(
             dpi, px, float(data.get("py") or 0),
             mm, float(data.get("mh") or 0),
             lpx, float(data.get("lpy") or 0)))
@@ -1061,7 +1061,7 @@ def _install_listeners(bridge):
     Rhino.RhinoApp.Idle              += on_idle
     Rhino.RhinoDoc.ActiveDocumentChanged += on_view_change
     sc.sticky[flag] = True
-    print("[MASSSTAB] Listener aktiv (Idle-Poll + Doc-Change)")
+    print("[MASSSTAB] Listener active (Idle-Poll + Doc-Change)")
 
 
 def get_current_scale_ratio():