chore: upgrade i18next 26, prettier 3, fontsource-variable, domhandler 6, lint-staged 17

- i18next 23->26 + react-i18next 15->17
- prettier 2->3, reformat all files
- replace @fontsource/inter with @fontsource-variable/inter 5, update import path
- domhandler 5->6 (aligns with transitive deps)
- lint-staged 16->17

src/app/hooks/useCallEmbed.ts

@@ -46,14 +46,14 @@ export const createCallEmbed = (
   container: HTMLElement,
   pref?: CallPreferences,
   noiseSuppression = true,
-  forceAudioOff = false
+  forceAudioOff = false,
 ): CallEmbed => {
   const rtcSession = mx.matrixRTC.getRoomSession(room);
   const ongoing =
     MatrixRTCSession.sessionMembershipsForRoom(room, rtcSession.sessionDescription).length > 0;
 
   const intent = CallEmbed.getIntent(dm, ongoing, pref?.video);
-  const initialAudio = forceAudioOff ? false : pref?.microphone ?? true;
+  const initialAudio = forceAudioOff ? false : (pref?.microphone ?? true);
   const initialVideo = pref?.video ?? false;
   const widget = CallEmbed.getWidget(
     mx,
@@ -62,7 +62,7 @@ export const createCallEmbed = (
     themeKind,
     noiseSuppression,
     initialAudio,
-    initialVideo
+    initialVideo,
   );
   const controlState =
     pref && new CallControlState(forceAudioOff ? false : pref.microphone, pref.video, pref.sound);
@@ -94,12 +94,12 @@ export const useCallStart = (dm = false) => {
         container,
         pref,
         callNoiseSuppression ?? true,
-        !!pttMode
+        !!pttMode,
       );
 
       setCallEmbed(callEmbed);
     },
-    [mx, dm, theme, setCallEmbed, callEmbedRef, callNoiseSuppression, pttMode]
+    [mx, dm, theme, setCallEmbed, callEmbedRef, callNoiseSuppression, pttMode],
   );
 
   return startCall;
@@ -113,7 +113,7 @@ export const useCallJoined = (embed?: CallEmbed): boolean => {
     ElementWidgetActions.JoinCall,
     useCallback(() => {
       setJoined(true);
-    }, [])
+    }, []),
   );
 
   useEffect(() => {
@@ -134,7 +134,7 @@ export const useCallMemberSoundSync = (embed: CallEmbed) => {
   const callSession = useCallSession(embed.room);
   useCallMembersChange(
     callSession,
-    useCallback(() => embed.control.applySound(), [embed])
+    useCallback(() => embed.control.applySound(), [embed]),
   );
 };
 
@@ -164,6 +164,6 @@ export const useCallEmbedPlacementSync = (containerViewRef: RefObject<HTMLDivEle
 
   useResizeObserver(
     syncCallEmbedPlacement,
-    useCallback(() => containerViewRef.current, [containerViewRef])
+    useCallback(() => containerViewRef.current, [containerViewRef]),
   );
 };