feat(editor): the three-dot button in the simulation too

A tap on a device in the simulation now also chooses it, so its three-dot
button shows as in the design, wherever the simulation's menu offers
something (the desktop, each card's data exchange; a switch has none).
Java's action of the tap stays (desktop, switch and NAT tables), a tap
beside lets go. The device sheet stays closed — the design is locked — and
the others see no frame. Java opens that menu only with a right click.

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

packages/editor/src/Editor.tsx

@@ -390,7 +390,8 @@ export function Editor({ doc, createSimHost, projectName, readOnly = false, froz
 
   // The others: told this editor's chosen device and open windows (a window is open only while the simulation runs).
   const windows = simulating ? desktops.map((desktop) => (desktop.viewer === 'capture' ? windowKey('capture') : windowKey(desktop.viewer ?? 'desktop', desktop.id))) : [];
-  const told = JSON.stringify([selected?.id ?? null, windows, moving]);
+  // A device chosen in the simulation only carries its three-dot button: the others see it chosen only in the design.
+  const told = JSON.stringify([simulating ? null : (selected?.id ?? null), windows, moving]);
   const publish = presence?.publish;
   useEffect(() => {
     const [device, open, drag] = JSON.parse(told) as [string | null, string[], Moving | null];
@@ -484,6 +485,7 @@ export function Editor({ doc, createSimHost, projectName, readOnly = false, froz
               else if (kind === 'networkSwitch') openDesktop(id, 'sat');
               else if (kind === 'gateway') openDesktop(id, 'nat');
             }}
+            hasMenu={(target) => menuItems(target).length > 0}
             onMenu={(target, at) => {
               if (readOnly && !simulating) return;
               if (editorMode === 'documentation') {
@@ -640,8 +642,8 @@ export function Editor({ doc, createSimHost, projectName, readOnly = false, froz
             </div>
           )}
         </div>
-        {/* Java shows the settings of the device that is chosen; closing them lets go of it, as a click beside it does. */}
-        {selected === undefined ? null : (
+        {/* Java shows the settings of the device that is chosen (not in the simulation: the design is locked); closing them lets go of it, as a click beside it does. */}
+        {selected === undefined || simulating ? null : (
           <DeviceSheet
             key={selected.id}
             doc={doc}

packages/editor/src/canvas/Canvas.tsx

@@ -77,9 +77,10 @@ export interface CanvasProps {
   /** A cable drawn active, as Java draws the cable of the card whose tab is open (Kabel.setAktiv). */
   readonly highlightedLink?: string | null;
   /**
-   * The simulation: a tap on a device activates it (a computer's desktop),
-   * a long press opens its menu; nothing moves, nothing is selected, as in
-   * Java's simulation mode. The documentation mode: see above.
+   * The simulation: a tap on a device activates it (a computer's desktop)
+   * and chooses it, so that its three-dot button shows as in the design; a
+   * long press opens its menu; nothing moves, as in Java's simulation mode.
+   * The documentation mode: see above.
    */
   readonly mode?: 'design' | 'simulation' | 'documentation';
   /**
@@ -97,6 +98,8 @@ export interface CanvasProps {
   /** The cables that carry a frame now, drawn as Java draws them then (JCablePanel.farbeBlinken). */
   readonly activeLinks?: ReadonlySet<string>;
   readonly onActivate?: (id: string) => void;
+  /** In the simulation: whether the chosen device has a menu at all (a switch has none) — only then its three-dot button. */
+  readonly hasMenu?: (target: Selection) => boolean;
 }
 
 const NO_LINKS: ReadonlySet<string> = new Set();
@@ -274,6 +277,7 @@ export const Canvas = forwardRef<CanvasHandle, CanvasProps>(function Canvas(
     chosenBy = NO_CHOICES,
     activeLinks = NO_LINKS,
     onActivate,
+    hasMenu,
     onDocFrame,
     renderDocText,
   },
@@ -542,7 +546,7 @@ export const Canvas = forwardRef<CanvasHandle, CanvasProps>(function Canvas(
       return;
     }
     if (now.kind === 'background') {
-      if (!now.moved && !simulating) {
+      if (!now.moved) {
         onSelect?.(null);
         if (cableFrom !== null) onCableStart?.(null);
       }
@@ -554,7 +558,10 @@ export const Canvas = forwardRef<CanvasHandle, CanvasProps>(function Canvas(
     }
     if (now.longPressed) return;
     if (simulating) {
-      if (!now.moved) onActivate?.(now.id);
+      if (!now.moved) {
+        onSelect?.({ kind: 'device', id: now.id });
+        onActivate?.(now.id);
+      }
       return;
     }
     if (locked) {
@@ -706,7 +713,7 @@ export const Canvas = forwardRef<CanvasHandle, CanvasProps>(function Canvas(
         const corner = toScreen(current, { x: item.x, y: item.y });
         return renderDocText(item, { left: corner.x, top: corner.y, width: item.width * current.scale, height: item.height * current.scale, scale: current.scale });
       })()}
-      {menuButton === null || selection === null || simulating || locked ? null : (
+      {menuButton === null || selection === null || (simulating ? hasMenu?.(selection) !== true : locked) ? null : (
         <button
           type="button"
           className="device-menu-button"