[IMP] OneBSpace rebrand of OpenCADStudio -> OneCAD Draft (wordmark, about, crash banner, 23 locales; strip SW/manifest; air-gap: update check, donations, discussions, external help links)

src/mcp.rs

@@ -944,7 +944,7 @@ fn sessions(launch_if_none: bool) -> Result<Vec<Value>, String> {
                     if claimed {
                         release_startup_lock(&directory);
                     }
-                    return Err(format!("OpenCADStudio exited while starting ({status})"));
+                    return Err(format!("OneCAD Draft exited while starting ({status})" /* OneBSpace (OneCAD Draft): rebranded */));
                 }
             }
             thread::sleep(Duration::from_millis(200));