fix: PTT blur/unmute, EC button hiding robustness, PTT status indicator

src/app/features/call/CallControls.tsx

@@ -58,14 +58,18 @@ export function CallControls({ callEmbed }: CallControlsProps) {
   const [pttKey] = useSetting(settingsAtom, 'pttKey');
   const [pttActive, setPttActive] = useState(false);
 
-  // Mute mic immediately when PTT is enabled mid-call so the key handler can activate
+  // Handle PTT mode toggle mid-call
   const pttModeRef = useRef(pttMode);
   useEffect(() => {
-    if (pttMode && !pttModeRef.current && microphone) {
+    if (pttMode && !pttModeRef.current) {
+      // PTT just enabled — mute mic so key handler can activate
       callEmbed.control.setMicrophone(false);
+    } else if (!pttMode && pttModeRef.current) {
+      // PTT just disabled — restore mic to on
+      callEmbed.control.setMicrophone(true);
     }
     pttModeRef.current = pttMode;
-  }, [pttMode, callEmbed, microphone]);
+  }, [pttMode, callEmbed]);
 
   const handleOpenMenu: MouseEventHandler<HTMLButtonElement> = (evt) => {
     setCords(evt.currentTarget.getBoundingClientRect());
@@ -101,11 +105,18 @@ export function CallControls({ callEmbed }: CallControlsProps) {
         setPttActive(false);
       }
     };
+    // Release PTT if the tab loses focus — prevents mic getting stuck on after tab switching
+    const onBlur = () => {
+      callEmbed.control.setMicrophone(false);
+      setPttActive(false);
+    };
     window.addEventListener('keydown', onKeyDown);
     window.addEventListener('keyup', onKeyUp);
+    window.addEventListener('blur', onBlur);
     return () => {
       window.removeEventListener('keydown', onKeyDown);
       window.removeEventListener('keyup', onKeyUp);
+      window.removeEventListener('blur', onBlur);
     };
   }, [pttMode, pttKey, callEmbed, microphone]);