Fix remaining German log messages: Panel registered, Listener active, sync all files to PROJECTS

- Fix sed $-anchor issue: 'Panel registriert' now replaced globally
- Translate: Listener aktiv, Select-Handler, Closing-Hook, Doppelklick-Handler
- Translate SPLASH messages: gesetzt/angewendet
- Translate ALIAS-LOADER, WELCOME, ELEMENTE migration messages
- Full rsync of all rhino/*.py to PROJECTS (previously partial sync missed schnitte.py, wand_grips.py, treppe_grips.py, text_editor.py, welcome.py etc.)

rhino/aliases/loader.py

@@ -427,7 +427,7 @@ def apply_all():
                             _quit_xml_pairs.append((xml_key, macro))
                         else:
                             print("[ALIAS-LOADER] WARN F-Key {} ({}) konnte weder "
-                                  "API noch XML gesetzt werden".format(trigger, action_id))
+                                  "API noch XML set werden".format(trigger, action_id))
                             n_skipped += 1; continue
                 n_fkey += 1
             elif spec_type == "cmd":
@@ -452,12 +452,12 @@ def apply_all():
             print("[ALIAS-LOADER] Apply", action_id, "->", trigger, ":", ex)
             n_skipped += 1
 
-    # Quit-Hook installieren falls XML-only Shortcuts gesetzt wurden — diese
+    # Quit-Hook installieren falls XML-only Shortcuts set wurden — diese
     # ueberlebt sonst Rhino's Auto-Save beim Quit nicht.
     if _quit_xml_pairs:
         _install_quit_xml_save(list(_quit_xml_pairs))
         print("[ALIAS-LOADER] {} XML-only Shortcuts werden bei Quit "
-              "re-persistiert (Closing-Hook installiert)"
+              "re-persistiert (closing hook installed)"
               .format(len(_quit_xml_pairs)))
 
     return n_alias, n_fkey, n_cmd, n_skipped