feat(extension): host control toggle + role badge in popup (step 5)

Final wiring of host control mode — the user-facing UI:

- Active-room section gains a Host Control card: a Host/Guest role badge, a
  host-only toggle ("Only I can control playback") shown to the host, and a
  guest notice when the room is host-only.
- Toggle sends SET_CONTROL_MODE; UI refreshes from the server's CONTROL_MODE
  broadcast (with optimistic revert on failure). Card updates on GET_STATUS,
  CONTROL_MODE, and reconnect.
- i18n: 6 new keys (LABEL_HOST_CONTROL[_TOOLTIP], LABEL_HOST_ONLY_TOGGLE,
  NOTICE_HOST_CONTROLS, BADGE_HOST, BADGE_GUEST) translated across all 15
  popup locales.

Completes the feature end to end (server + background + content + popup).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

extension/locales/de.json

@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Teile diesen Link mit Freunden, damit sie beitreten können",
   "LABEL_PEERS_IN_ROOM": "Teilnehmer im Raum",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Andere Benutzer, die derzeit mit diesem Raum verbunden sind",
+  "LABEL_HOST_CONTROL": "Host-Steuerung",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Festlegen, wer die Wiedergabe in diesem Raum steuern darf",
+  "LABEL_HOST_ONLY_TOGGLE": "Nur ich darf die Wiedergabe steuern",
+  "NOTICE_HOST_CONTROLS": "Der Host steuert die Wiedergabe für alle.",
+  "BADGE_HOST": "Host",
+  "BADGE_GUEST": "Gast",
   "NO_PEERS_CONNECTED": "Keine Teilnehmer verbunden",
   "BTN_LEAVE_ROOM": "Raum verlassen",
   "LABEL_SELECT_VIDEO": "Video auswählen",

extension/locales/en.json

@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Share this link with friends so they can join",
   "LABEL_PEERS_IN_ROOM": "Peers in Room",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Other users currently connected to this room",
+  "LABEL_HOST_CONTROL": "Host Control",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Restrict who can control playback in this room",
+  "LABEL_HOST_ONLY_TOGGLE": "Only I can control playback",
+  "NOTICE_HOST_CONTROLS": "The host controls playback for everyone.",
+  "BADGE_HOST": "Host",
+  "BADGE_GUEST": "Guest",
   "NO_PEERS_CONNECTED": "No peers connected",
   "BTN_LEAVE_ROOM": "Leave Room",
   "LABEL_SELECT_VIDEO": "Select Video",

extension/locales/es.json

@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Comparte este enlace con amigos para que se unan",
   "LABEL_PEERS_IN_ROOM": "Participantes en la sala",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Otros usuarios conectados actualmente a esta sala",
+  "LABEL_HOST_CONTROL": "Control del anfitrión",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Restringir quién puede controlar la reproducción en esta sala",
+  "LABEL_HOST_ONLY_TOGGLE": "Solo yo puedo controlar la reproducción",
+  "NOTICE_HOST_CONTROLS": "El anfitrión controla la reproducción para todos.",
+  "BADGE_HOST": "Anfitrión",
+  "BADGE_GUEST": "Invitado",
   "NO_PEERS_CONNECTED": "Sin participantes conectados",
   "BTN_LEAVE_ROOM": "Salir de la sala",
   "LABEL_SELECT_VIDEO": "Seleccionar video",

extension/locales/fr.json

@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Partagez ce lien avec vos amis pour qu'ils vous rejoignent",
   "LABEL_PEERS_IN_ROOM": "Membres dans le salon",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Autres utilisateurs connectés à ce salon",
+  "LABEL_HOST_CONTROL": "Contrôle de l'hôte",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Définir qui peut contrôler la lecture dans ce salon",
+  "LABEL_HOST_ONLY_TOGGLE": "Moi seul peux contrôler la lecture",
+  "NOTICE_HOST_CONTROLS": "L'hôte contrôle la lecture pour tout le monde.",
+  "BADGE_HOST": "Hôte",
+  "BADGE_GUEST": "Invité",
   "NO_PEERS_CONNECTED": "Aucun membre connecté",
   "BTN_LEAVE_ROOM": "Quitter le salon",
   "LABEL_SELECT_VIDEO": "Choisir une vidéo",

extension/locales/it.json

@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Condividi questo link per invitare i tuoi amici",
   "LABEL_PEERS_IN_ROOM": "Partecipanti",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Utenti connessi a questa stanza",
+  "LABEL_HOST_CONTROL": "Controllo host",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Limita chi può controllare la riproduzione in questa stanza",
+  "LABEL_HOST_ONLY_TOGGLE": "Solo io posso controllare la riproduzione",
+  "NOTICE_HOST_CONTROLS": "L'host controlla la riproduzione per tutti.",
+  "BADGE_HOST": "Host",
+  "BADGE_GUEST": "Ospite",
   "NO_PEERS_CONNECTED": "Nessun partecipante connesso",
   "BTN_LEAVE_ROOM": "Lascia Stanza",
   "LABEL_SELECT_VIDEO": "Seleziona Video",

extension/locales/ja.json

@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "友達とこのリンクを共有して参加してもらいましょう",
   "LABEL_PEERS_IN_ROOM": "ルーム内のメンバー",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "現在このルームに接続している他のユーザー",
+  "LABEL_HOST_CONTROL": "ホスト操作",
+  "LABEL_HOST_CONTROL_TOOLTIP": "このルームで再生を操作できる人を制限します",
+  "LABEL_HOST_ONLY_TOGGLE": "再生を操作できるのは自分だけ",
+  "NOTICE_HOST_CONTROLS": "ホストが全員の再生を操作します。",
+  "BADGE_HOST": "ホスト",
+  "BADGE_GUEST": "ゲスト",
   "NO_PEERS_CONNECTED": "接続しているメンバーはいません",
   "BTN_LEAVE_ROOM": "ルームを退室",
   "LABEL_SELECT_VIDEO": "ビデオを選択",

extension/locales/ko.json

@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "친구들이 참여할 수 있도록 이 링크를 공유하세요",
   "LABEL_PEERS_IN_ROOM": "방의 참여자",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "현재 이 방에 연결되어 있는 다른 사용자들",
+  "LABEL_HOST_CONTROL": "호스트 제어",
+  "LABEL_HOST_CONTROL_TOOLTIP": "이 방에서 재생을 제어할 수 있는 사람 제한",
+  "LABEL_HOST_ONLY_TOGGLE": "나만 재생을 제어할 수 있음",
+  "NOTICE_HOST_CONTROLS": "호스트가 모두의 재생을 제어합니다.",
+  "BADGE_HOST": "호스트",
+  "BADGE_GUEST": "게스트",
   "NO_PEERS_CONNECTED": "연결된 참여자가 없습니다",
   "BTN_LEAVE_ROOM": "방 나가기",
   "LABEL_SELECT_VIDEO": "비디오 선택",

extension/locales/nl.json

@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Deel deze link met vrienden zodat ze kunnen deelnemen",
   "LABEL_PEERS_IN_ROOM": "Deelnemers in kamer",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Andere gebruikers die momenteel zijn verbonden met deze kamer",
+  "LABEL_HOST_CONTROL": "Hostbeheer",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Bepaal wie de weergave in deze kamer mag bedienen",
+  "LABEL_HOST_ONLY_TOGGLE": "Alleen ik mag de weergave bedienen",
+  "NOTICE_HOST_CONTROLS": "De host bedient de weergave voor iedereen.",
+  "BADGE_HOST": "Host",
+  "BADGE_GUEST": "Gast",
   "NO_PEERS_CONNECTED": "Geen deelnemers verbonden",
   "BTN_LEAVE_ROOM": "Kamer verlaten",
   "LABEL_SELECT_VIDEO": "Selecteer video",

extension/locales/pl.json

@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Udostępnij ten link znajomym, aby mogli dołączyć",
   "LABEL_PEERS_IN_ROOM": "Uczestnicy w pokoju",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Inni użytkownicy aktualnie połączeni z tym pokojem",
+  "LABEL_HOST_CONTROL": "Kontrola hosta",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Określ, kto może sterować odtwarzaniem w tym pokoju",
+  "LABEL_HOST_ONLY_TOGGLE": "Tylko ja mogę sterować odtwarzaniem",
+  "NOTICE_HOST_CONTROLS": "Host steruje odtwarzaniem dla wszystkich.",
+  "BADGE_HOST": "Host",
+  "BADGE_GUEST": "Gość",
   "NO_PEERS_CONNECTED": "Brak połączonych uczestników",
   "BTN_LEAVE_ROOM": "Opuść pokój",
   "LABEL_SELECT_VIDEO": "Wybierz wideo",

extension/locales/pt-BR.json

@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Compartilhe este link com seus amigos para que eles entrem",
   "LABEL_PEERS_IN_ROOM": "Participantes",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Outros usuários conectados a esta sala",
+  "LABEL_HOST_CONTROL": "Controle do anfitrião",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Restringir quem pode controlar a reprodução nesta sala",
+  "LABEL_HOST_ONLY_TOGGLE": "Somente eu posso controlar a reprodução",
+  "NOTICE_HOST_CONTROLS": "O anfitrião controla a reprodução para todos.",
+  "BADGE_HOST": "Anfitrião",
+  "BADGE_GUEST": "Convidado",
   "NO_PEERS_CONNECTED": "Sem participantes conectados",
   "BTN_LEAVE_ROOM": "Sair da sala",
   "LABEL_SELECT_VIDEO": "Selecionar vídeo",

extension/locales/pt.json

@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Partilhe este link com os amigos para que possam entrar",
   "LABEL_PEERS_IN_ROOM": "Participantes na Sala",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Utilizadores atualmente ligados a esta sala",
+  "LABEL_HOST_CONTROL": "Controlo do anfitrião",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Restringir quem pode controlar a reprodução nesta sala",
+  "LABEL_HOST_ONLY_TOGGLE": "Só eu posso controlar a reprodução",
+  "NOTICE_HOST_CONTROLS": "O anfitrião controla a reprodução para todos.",
+  "BADGE_HOST": "Anfitrião",
+  "BADGE_GUEST": "Convidado",
   "NO_PEERS_CONNECTED": "Nenhum participante ligado",
   "BTN_LEAVE_ROOM": "Sair da Sala",
   "LABEL_SELECT_VIDEO": "Selecionar Vídeo",

extension/locales/ru.json

@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Поделитесь этой ссылкой с друзьями, чтобы они вошли",
   "LABEL_PEERS_IN_ROOM": "Участники в комнате",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Другие пользователи, подключенные к этой комнате",
+  "LABEL_HOST_CONTROL": "Управление ведущим",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Ограничить, кто может управлять воспроизведением в этой комнате",
+  "LABEL_HOST_ONLY_TOGGLE": "Только я могу управлять воспроизведением",
+  "NOTICE_HOST_CONTROLS": "Ведущий управляет воспроизведением для всех.",
+  "BADGE_HOST": "Ведущий",
+  "BADGE_GUEST": "Гость",
   "NO_PEERS_CONNECTED": "Нет подключенных участников",
   "BTN_LEAVE_ROOM": "Выйти из комнаты",
   "LABEL_SELECT_VIDEO": "Выбрать видео",

extension/locales/tr.json

@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Katılabilmeleri için bu bağlantıyı arkadaşlarınızla paylaşın",
   "LABEL_PEERS_IN_ROOM": "Odadaki Kişiler",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Şu anda bu odaya bağlı olan diğer kullanıcılar",
+  "LABEL_HOST_CONTROL": "Sunucu Kontrolü",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Bu odada oynatmayı kimin kontrol edebileceğini belirleyin",
+  "LABEL_HOST_ONLY_TOGGLE": "Oynatmayı yalnızca ben kontrol edebilirim",
+  "NOTICE_HOST_CONTROLS": "Oynatmayı herkes için sunucu kontrol eder.",
+  "BADGE_HOST": "Sunucu",
+  "BADGE_GUEST": "Misafir",
   "NO_PEERS_CONNECTED": "Bağlı kimse yok",
   "BTN_LEAVE_ROOM": "Odadan Ayrıl",
   "LABEL_SELECT_VIDEO": "Video Seç",

extension/locales/uk.json

@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "Поділіться цим посиланням з друзями, щоб вони могли приєднатися",
   "LABEL_PEERS_IN_ROOM": "Учасники в кімнаті",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "Інші користувачі зараз підключені до цієї кімнати",
+  "LABEL_HOST_CONTROL": "Керування ведучим",
+  "LABEL_HOST_CONTROL_TOOLTIP": "Обмежити, хто може керувати відтворенням у цій кімнаті",
+  "LABEL_HOST_ONLY_TOGGLE": "Лише я можу керувати відтворенням",
+  "NOTICE_HOST_CONTROLS": "Ведучий керує відтворенням для всіх.",
+  "BADGE_HOST": "Ведучий",
+  "BADGE_GUEST": "Гість",
   "NO_PEERS_CONNECTED": "Немає підключених однорангових пристроїв",
   "BTN_LEAVE_ROOM": "Вийти з кімнати",
   "LABEL_SELECT_VIDEO": "Виберіть Відео",

extension/locales/zh.json

@@ -44,6 +44,12 @@
   "LABEL_INVITE_LINK_TOOLTIP": "与朋友分享此链接，以便他们可以加入",
   "LABEL_PEERS_IN_ROOM": "房间里的同伴",
   "LABEL_PEERS_IN_ROOM_TOOLTIP": "当前连接到该房间的其他用户",
+  "LABEL_HOST_CONTROL": "主持人控制",
+  "LABEL_HOST_CONTROL_TOOLTIP": "限制谁可以在此房间中控制播放",
+  "LABEL_HOST_ONLY_TOGGLE": "仅我可以控制播放",
+  "NOTICE_HOST_CONTROLS": "由主持人为所有人控制播放。",
+  "BADGE_HOST": "主持人",
+  "BADGE_GUEST": "访客",
   "NO_PEERS_CONNECTED": "没有对等点连接",
   "BTN_LEAVE_ROOM": "离开房间",
   "LABEL_SELECT_VIDEO": "选择视频",