fix: keep disposed Radio disclosures inert

src/ui/radioBindings.js

@@ -10,6 +10,7 @@ export function bindRadioControls() {
   if (!this._radioPanel) return;
   const tunerListenerOptions = {};
   const setRadioDisclosure = (expanded, { returnFocus = false } = {}) => {
+    if (this.destroyed) return;
     const open = Boolean(expanded);
     this._contextRadioDock?.classList.toggle('disclosure-open', open);
     if (this._contextRadioMini) this._contextRadioMini.hidden = !open;
@@ -23,6 +24,7 @@ export function bindRadioControls() {
     expanded,
     { returnFocus = false } = {},
   ) => {
+    if (this.destroyed) return;
     const displayOpen = kind === 'display' && Boolean(expanded);
     const radioOpen = kind === 'radio' && Boolean(expanded);
     if (displayOpen || radioOpen) this.actions.setSignalCollapsed(true);

src/ui/radioControls.js

@@ -156,7 +156,7 @@ export class RadioControls {
 
   /** Keep the Context header Radio shortcut truthful for its current route. */
   _syncContextRadioLauncherState() {
-    if (!this._contextRadioToggleBtn) return;
+    if (this.destroyed || !this._contextRadioToggleBtn) return;
     const contextPanel = document.getElementById('global-context-panel');
     const contextExpanded = Boolean(
       contextPanel && !contextPanel.classList.contains('collapsed'),

src/ui/radioControls.test.mjs

@@ -102,6 +102,8 @@ test('Radio listeners and subscriptions are revoked once before tuning teardown'
     f.controls.destroy();
     f.controls.destroy();
     const snapshot = structuredClone(f.calls);
+    f.controls._setRadioDisclosure(true);
+    f.controls._setCockpitDisclosure('display', true);
     f.next.dispatchEvent(new Event('click'));
     f.document.dispatchEvent(new Event('gev:radio-selected'));
     f.subscribers[0]({ enabled: true });