feat(editor): F4.6a simulation mode and a computer's desktop

Java's mode buttons start and stop the room, now in a worker of the
editor's page (LocalSimHost), with Java's speed slider. While the
simulation runs the design is locked as in Java: no palette, no sheet,
nothing moves, no undo. Cables that carry a frame light up in Java's
green, and a tap on a computer opens its desktop: Java's title, the
software installation first, then the installed programs in the order
of Java's list for the language, a taskbar with the network icon and
the network as the simulation runs it. The room sends that over a new
topic, node:<id>. Desktops stay over a return to the design and show
again at the next start. The programs' windows follow from F4.6b.

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

packages/editor/src/i18n/de.json

@@ -22,6 +22,9 @@
   "design.palette": "Komponenten",
   "design.redo": "Wiederholen",
   "design.undo": "Rückgängig",
+  "desktop.home": "Startbildschirm",
+  "desktop.installation": "Software-Installation",
+  "desktop.network": "Netzwerk",
   "dev.example": "Beispiel",
   "dev.newProject": "Neues Projekt",
   "dev.openFile": "Datei öffnen …",
@@ -79,6 +82,29 @@
   "menu.delete": "Löschen",
   "menu.removeAllCables": "Alle Verbindungen entfernen",
   "menu.removeCable": "Verbindung entfernen",
+  "menu.showDesktop": "Desktop anzeigen",
+  "mode.currentSpeed": "Aktuelle Simulationsgeschwindigkeit",
+  "mode.design": "Wechselt in den Entwurfsmodus",
+  "mode.simulation": "Wechselt in den Aktionsmodus",
+  "mode.speed": "Simulationsgeschwindigkeit anpassen",
+  "network.dnsServer": "DNS-Server:",
+  "network.gateway": "Gateway:",
+  "network.ipAddress": "IP-Adresse:",
+  "network.macAddress": "MAC-Adresse:",
+  "network.subnetMask": "Netzmaske:",
+  "program.commandPrompt": "Befehlszeile",
+  "program.dnsServer": "DNS-Server",
+  "program.echoServer": "Echo-Server",
+  "program.emailClient": "E-Mail-Programm",
+  "program.emailServer": "E-Mail-Server",
+  "program.fileExplorer": "Datei-Explorer",
+  "program.firewall": "Firewall",
+  "program.gnutella": "Gnutella",
+  "program.imageViewer": "Bildbetrachter",
+  "program.simpleClient": "Einfacher Client",
+  "program.textEditor": "Text-Editor",
+  "program.webBrowser": "Webbrowser",
+  "program.webServer": "Webserver",
   "route.destinationNetwork": "Ziel",
   "route.gateway": "Nächstes Gateway",
   "route.interfaceIPAddress": "Über Schnittstelle",
@@ -127,6 +153,7 @@
   "sheet.switchSsid": "Name WLAN (SSID)",
   "sheet.title": "Einstellungen",
   "sheet.wireless": "Drahtlos (WLAN)",
+  "sim.failed": "Die Simulation ist auf einen Fehler gestoßen und wurde beendet.",
   "zoom.fit": "Alles zeigen",
   "zoom.in": "Vergrößern",
   "zoom.level": "{percent} %",