feat(orbit): per-guest suggestion mute + global pending-cap setting

Two anti-spam knobs the host can dial during a live session:

1. Per-guest suggestion mute — Mic / MicOff toggle next to the
   kick/ban buttons in the participants popover. Symmetric (re-enable
   later). State lives in OrbitState.suggestionBlocked: string[]; the
   guest reads it and disables its own Suggest controls so the user
   sees a clear "muted" state instead of silent failures. Host-side
   sweep also drops their outbox entries as a safety net.

2. Max pending approvals cap — number input in the session-settings
   popover, default 0 (= unlimited so existing sessions are unaffected).
   When set, the host sweep stops folding new outbox entries into the
   approval list once the cap is reached. The OrbitQueueHead surfaces
   "X / Y pending" so guests can see when they're getting close.

State changes are additive on the wire — both fields are optional, with
parseOrbitState defaulting them, so older clients keep working.

evaluateOrbitSuggestGate() centralises the guest-side allow/block check
shared between useOrbitSongRowBehavior and the ContextMenu Add-to-Session
items, plus suggestOrbitTrack as a defensive last line.

i18n: en + de + fr + nl + zh + nb + ru + es.

Also fixes an earlier dedupe-key collision: the (user, trackId) cache
keys were missing their separator (NULL byte slipped in during the
previous patch), so two tracks could share a key and one of them
silently overwrite the other. Restored the space separator.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/locales/de.ts

@@ -1580,6 +1580,10 @@ export const deTranslation = {
     participantsRemoveAria: '{{user}} aus dieser Session entfernen',
     participantsBanTooltip: 'Permanent bannen',
     participantsBanAria: '{{user}} permanent bannen',
+    participantsMuteTooltip: 'Vorschläge sperren',
+    participantsUnmuteTooltip: 'Vorschläge erlauben',
+    participantsMuteAria: 'Vorschläge von {{user}} sperren',
+    participantsUnmuteAria: 'Vorschläge von {{user}} wieder erlauben',
     confirmRemoveTitle: 'Aus Session entfernen?',
     confirmRemoveBody: '{{user}} wird aus der Session geworfen, kann aber jederzeit über deinen Einladungslink wieder beitreten.',
     confirmRemoveConfirm: 'Entfernen',
@@ -1605,6 +1609,12 @@ export const deTranslation = {
     settingAutoShuffleHint: 'Periodischer Fisher-Yates-Shuffle der kommenden Warteschlange. Aus: Reihenfolge wird nur verändert, wenn du selbst sortierst.',
     settingShuffleInterval: 'Alle',
     settingShuffleIntervalHint: 'Wie oft die kommende Warteschlange während der Session neu gemischt wird.',
+    settingMaxPending: 'Max offene Vorschläge',
+    settingMaxPendingHint: 'Begrenzt, wie viele Gast-Vorschläge gleichzeitig auf Bestätigung warten dürfen. 0 = unbegrenzt.',
+    pendingCounter: '{{count}} / {{max}} offen',
+    pendingCounterTooltip: 'Wartende Gast-Vorschläge / Limit',
+    suggestBlockedMuted: 'Der Host hat dich für diese Session gesperrt — keine Vorschläge möglich.',
+    suggestBlockedCap: 'Approval-Liste ist voll — warte bis der Host welche durchwinkt.',
     settingShuffleIntervalValue_one: '{{count}} Min.',
     settingShuffleIntervalValue_other: '{{count}} Min.',
     settingShuffleNow: 'Jetzt mischen',

src/locales/en.ts

@@ -1584,6 +1584,10 @@ export const enTranslation = {
     participantsRemoveAria: 'Remove {{user}} from this session',
     participantsBanTooltip: 'Ban permanently',
     participantsBanAria: 'Permanently ban {{user}}',
+    participantsMuteTooltip: 'Mute suggestions',
+    participantsUnmuteTooltip: 'Allow suggestions',
+    participantsMuteAria: 'Mute suggestions from {{user}}',
+    participantsUnmuteAria: 'Allow suggestions from {{user}}',
     confirmRemoveTitle: 'Remove from session?',
     confirmRemoveBody: '{{user}} will be dropped from the session, but can re-join via your invite link.',
     confirmRemoveConfirm: 'Remove',
@@ -1609,6 +1613,12 @@ export const enTranslation = {
     settingAutoShuffleHint: "Periodic Fisher–Yates shuffle of the upcoming queue. Off: order only changes when you rearrange it.",
     settingShuffleInterval: 'Reshuffle every',
     settingShuffleIntervalHint: 'How often the upcoming queue gets reshuffled while the session runs.',
+    settingMaxPending: 'Max pending suggestions',
+    settingMaxPendingHint: 'Cap on how many guest suggestions can wait for approval. 0 = unlimited.',
+    pendingCounter: '{{count}} / {{max}} pending',
+    pendingCounterTooltip: 'Pending guest suggestions / cap',
+    suggestBlockedMuted: 'The host muted you for this session — suggestions are off.',
+    suggestBlockedCap: 'Approval queue is full — wait for the host to clear some.',
     settingShuffleIntervalValue_one: '{{count}} min',
     settingShuffleIntervalValue_other: '{{count}} min',
     settingShuffleNow: 'Shuffle now',

src/locales/es.ts

@@ -1567,6 +1567,10 @@ export const esTranslation = {
     participantsRemoveAria: 'Quitar a {{user}} de esta sesión',
     participantsBanTooltip: 'Banear permanentemente',
     participantsBanAria: 'Banear permanentemente a {{user}}',
+    participantsMuteTooltip: 'Silenciar sugerencias',
+    participantsUnmuteTooltip: 'Permitir sugerencias',
+    participantsMuteAria: 'Silenciar las sugerencias de {{user}}',
+    participantsUnmuteAria: 'Volver a permitir las sugerencias de {{user}}',
     confirmRemoveTitle: '¿Quitar de la sesión?',
     confirmRemoveBody: '{{user}} será expulsado de la sesión, pero puede volver a unirse por tu enlace de invitación.',
     confirmRemoveConfirm: 'Quitar',
@@ -1592,6 +1596,12 @@ export const esTranslation = {
     settingAutoShuffleHint: 'Mezclado Fisher-Yates periódico de la cola próxima. Desactivado: el orden solo cambia cuando lo reorganizas.',
     settingShuffleInterval: 'Remezclar cada',
     settingShuffleIntervalHint: 'Con qué frecuencia se remezcla la cola próxima durante la sesión.',
+    settingMaxPending: 'Máx. sugerencias pendientes',
+    settingMaxPendingHint: 'Límite de sugerencias de invitados que pueden esperar aprobación a la vez. 0 = ilimitado.',
+    pendingCounter: '{{count}} / {{max}} pendientes',
+    pendingCounterTooltip: 'Sugerencias de invitados pendientes / límite',
+    suggestBlockedMuted: 'El anfitrión te silenció en esta sesión — sugerencias desactivadas.',
+    suggestBlockedCap: 'La cola de aprobación está llena — espera a que el anfitrión despeje algunas.',
     settingShuffleIntervalValue_one: '{{count}} min',
     settingShuffleIntervalValue_other: '{{count}} min',
     settingShuffleNow: 'Mezclar ahora',

src/locales/fr.ts

@@ -1562,6 +1562,10 @@ export const frTranslation = {
     participantsRemoveAria: 'Retirer {{user}} de cette session',
     participantsBanTooltip: 'Bannir définitivement',
     participantsBanAria: 'Bannir définitivement {{user}}',
+    participantsMuteTooltip: 'Bloquer les suggestions',
+    participantsUnmuteTooltip: 'Autoriser les suggestions',
+    participantsMuteAria: 'Bloquer les suggestions de {{user}}',
+    participantsUnmuteAria: 'Autoriser à nouveau les suggestions de {{user}}',
     confirmRemoveTitle: 'Retirer de la session ?',
     confirmRemoveBody: '{{user}} sera retiré de la session mais peut rejoindre via ton lien d\'invitation.',
     confirmRemoveConfirm: 'Retirer',
@@ -1587,6 +1591,12 @@ export const frTranslation = {
     settingAutoShuffleHint: 'Mélange Fisher-Yates périodique de la file à venir. Désactivé : l\'ordre ne change que lorsque tu le réorganises.',
     settingShuffleInterval: 'Remélanger toutes les',
     settingShuffleIntervalHint: 'Fréquence de remélange de la file pendant la session.',
+    settingMaxPending: 'Max suggestions en attente',
+    settingMaxPendingHint: 'Limite le nombre de suggestions invitées qui attendent ton approbation. 0 = illimité.',
+    pendingCounter: '{{count}} / {{max}} en attente',
+    pendingCounterTooltip: 'Suggestions invitées en attente / limite',
+    suggestBlockedMuted: 'L\'hôte t\'a coupé le micro pour cette session — suggestions désactivées.',
+    suggestBlockedCap: 'La file d\'approbation est pleine — attends que l\'hôte en traite.',
     settingShuffleIntervalValue_one: '{{count}} min',
     settingShuffleIntervalValue_other: '{{count}} min',
     settingShuffleNow: 'Mélanger maintenant',

src/locales/nb.ts

@@ -1561,6 +1561,10 @@ export const nbTranslation = {
     participantsRemoveAria: 'Fjern {{user}} fra denne økten',
     participantsBanTooltip: 'Uteste permanent',
     participantsBanAria: 'Uteste {{user}} permanent',
+    participantsMuteTooltip: 'Blokker forslag',
+    participantsUnmuteTooltip: 'Tillat forslag',
+    participantsMuteAria: 'Blokker forslag fra {{user}}',
+    participantsUnmuteAria: 'Tillat forslag fra {{user}} igjen',
     confirmRemoveTitle: 'Fjerne fra økten?',
     confirmRemoveBody: '{{user}} fjernes fra økten, men kan bli med igjen via invitasjonslenken din.',
     confirmRemoveConfirm: 'Fjern',
@@ -1586,6 +1590,12 @@ export const nbTranslation = {
     settingAutoShuffleHint: 'Periodisk Fisher-Yates-stokking av kommende kø. Av: rekkefølgen endres bare når du omorganiserer den.',
     settingShuffleInterval: 'Stokk på nytt hver',
     settingShuffleIntervalHint: 'Hvor ofte kommende kø stokkes på nytt mens økten kjører.',
+    settingMaxPending: 'Maks ventende forslag',
+    settingMaxPendingHint: 'Hvor mange gjesteforslag som samtidig kan vente på godkjenning. 0 = ubegrenset.',
+    pendingCounter: '{{count}} / {{max}} venter',
+    pendingCounterTooltip: 'Ventende gjesteforslag / grense',
+    suggestBlockedMuted: 'Verten har blokkert deg for denne økten — forslag er av.',
+    suggestBlockedCap: 'Godkjenningskøen er full — vent til verten tar unna noen.',
     settingShuffleIntervalValue_one: '{{count}} min',
     settingShuffleIntervalValue_other: '{{count}} min',
     settingShuffleNow: 'Stokk nå',

src/locales/nl.ts

@@ -1561,6 +1561,10 @@ export const nlTranslation = {
     participantsRemoveAria: '{{user}} uit deze sessie verwijderen',
     participantsBanTooltip: 'Permanent bannen',
     participantsBanAria: '{{user}} permanent bannen',
+    participantsMuteTooltip: 'Voorstellen blokkeren',
+    participantsUnmuteTooltip: 'Voorstellen toestaan',
+    participantsMuteAria: 'Voorstellen van {{user}} blokkeren',
+    participantsUnmuteAria: 'Voorstellen van {{user}} weer toestaan',
     confirmRemoveTitle: 'Uit sessie verwijderen?',
     confirmRemoveBody: '{{user}} wordt uit de sessie verwijderd, maar kan opnieuw deelnemen via je uitnodigingslink.',
     confirmRemoveConfirm: 'Verwijderen',
@@ -1586,6 +1590,12 @@ export const nlTranslation = {
     settingAutoShuffleHint: 'Periodieke Fisher-Yates-shuffle van de komende wachtrij. Uit: de volgorde verandert alleen wanneer je zelf herschikt.',
     settingShuffleInterval: 'Opnieuw shufflen elke',
     settingShuffleIntervalHint: 'Hoe vaak de komende wachtrij tijdens de sessie opnieuw wordt geshuffled.',
+    settingMaxPending: 'Max openstaande voorstellen',
+    settingMaxPendingHint: 'Hoeveel gastvoorstellen tegelijk op goedkeuring mogen wachten. 0 = onbeperkt.',
+    pendingCounter: '{{count}} / {{max}} open',
+    pendingCounterTooltip: 'Wachtende gastvoorstellen / limiet',
+    suggestBlockedMuted: 'De host heeft je voor deze sessie geblokkeerd — voorstellen uitgeschakeld.',
+    suggestBlockedCap: 'De goedkeuringslijst is vol — wacht tot de host er een paar afhandelt.',
     settingShuffleIntervalValue_one: '{{count}} min',
     settingShuffleIntervalValue_other: '{{count}} min',
     settingShuffleNow: 'Nu shufflen',

src/locales/ru.ts

@@ -1641,6 +1641,10 @@ export const ruTranslation = {
     participantsRemoveAria: 'Удалить {{user}} из этой сессии',
     participantsBanTooltip: 'Забанить навсегда',
     participantsBanAria: 'Забанить {{user}} навсегда',
+    participantsMuteTooltip: 'Запретить предлагать треки',
+    participantsUnmuteTooltip: 'Разрешить предлагать треки',
+    participantsMuteAria: 'Запретить {{user}} предлагать треки',
+    participantsUnmuteAria: 'Снова разрешить {{user}} предлагать треки',
     confirmRemoveTitle: 'Удалить из сессии?',
     confirmRemoveBody: '{{user}} будет удалён из сессии, но может присоединиться снова по твоей ссылке-приглашению.',
     confirmRemoveConfirm: 'Удалить',
@@ -1666,6 +1670,12 @@ export const ruTranslation = {
     settingAutoShuffleHint: 'Периодическое Fisher-Yates перемешивание предстоящей очереди. Выкл.: порядок меняется только при ручной перестановке.',
     settingShuffleInterval: 'Перемешивать каждые',
     settingShuffleIntervalHint: 'Как часто предстоящая очередь перемешивается во время сессии.',
+    settingMaxPending: 'Макс. ожидающих заявок',
+    settingMaxPendingHint: 'Сколько гостевых предложений могут одновременно ждать одобрения. 0 = без лимита.',
+    pendingCounter: '{{count}} / {{max}} в ожидании',
+    pendingCounterTooltip: 'Ожидающие гостевые заявки / лимит',
+    suggestBlockedMuted: 'Хост отключил тебе предложение треков на этой сессии.',
+    suggestBlockedCap: 'Очередь одобрений переполнена — подожди, пока хост её разгребёт.',
     settingShuffleIntervalValue_one: '{{count}} мин',
     settingShuffleIntervalValue_few: '{{count}} мин',
     settingShuffleIntervalValue_many: '{{count}} мин',

src/locales/zh.ts

@@ -1554,6 +1554,10 @@ export const zhTranslation = {
     participantsRemoveAria: '从此会话中移除 {{user}}',
     participantsBanTooltip: '永久封禁',
     participantsBanAria: '永久封禁 {{user}}',
+    participantsMuteTooltip: '禁止投歌',
+    participantsUnmuteTooltip: '允许投歌',
+    participantsMuteAria: '禁止 {{user}} 投歌',
+    participantsUnmuteAria: '允许 {{user}} 重新投歌',
     confirmRemoveTitle: '从会话中移除？',
     confirmRemoveBody: '{{user}} 将从会话中移除，但可以通过你的邀请链接重新加入。',
     confirmRemoveConfirm: '移除',
@@ -1579,6 +1583,12 @@ export const zhTranslation = {
     settingAutoShuffleHint: '即将播放队列的定期 Fisher-Yates 洗牌。关闭：顺序仅在你手动重新排列时改变。',
     settingShuffleInterval: '洗牌间隔',
     settingShuffleIntervalHint: '会话运行时即将播放队列的重新洗牌频率。',
+    settingMaxPending: '最大待审投歌数',
+    settingMaxPendingHint: '同时等待审核的访客投歌上限。0 = 不限制。',
+    pendingCounter: '{{count}} / {{max}} 待审',
+    pendingCounterTooltip: '等待中的访客投歌 / 上限',
+    suggestBlockedMuted: '主持人已禁止你在本场会话投歌。',
+    suggestBlockedCap: '审核队列已满，等主持人处理一些再继续。',
     settingShuffleIntervalValue_one: '{{count}} 分钟',
     settingShuffleIntervalValue_other: '{{count}} 分钟',
     settingShuffleNow: '立即洗牌',