playlists: refuse a body no frame can carry, and say which one

A DataChannel send() throws above the max-message-size the node advertises
(aiortc: 65536), so the 1 MB body cap was unreachable and each body push
swallowed the difference in a bare catch. Cap at 62 KB after sealing, name
the playlist in the sync result, keep syncing the rest.

Measured: 1000 tracks seal to 53 276 bytes, so the ceiling is ~1200.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

10 files changed, 10 insertions, 0 deletions

diff --git a/packages/meshbay-hub/src/meshbay_hub/static/locales/de.js b/packages/meshbay-hub/src/meshbay_hub/static/locales/de.js
index 4cfa0a7..cb92b18 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/locales/de.js
+++ b/packages/meshbay-hub/src/meshbay_hub/static/locales/de.js
@@ -336,6 +336,7 @@ export default {
   'playlists.synced': 'Playlists synchronisiert',
   'playlists.sync_failed': 'Synchronisierung fehlgeschlagen',
   'playlists.err_no_key': 'Melde dich einmal ab und mit deinem Passwort wieder an, damit Playlists zwischen Geräten synchronisiert werden.',
+  'playlists.err_too_large': '„{name}“ ist zu groß, um mit deinen anderen Geräten synchronisiert zu werden. Teile sie in Playlists von etwa {n} Titeln auf.',
   'playlists.track_removed': 'Titel entfernt',
   'playlists.save_queue': 'Warteschlange als Playlist speichern…',
   'playlists.cancel': 'Abbrechen',
diff --git a/packages/meshbay-hub/src/meshbay_hub/static/locales/en.js b/packages/meshbay-hub/src/meshbay_hub/static/locales/en.js
index 1616eb5..3b84c3c 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/locales/en.js
+++ b/packages/meshbay-hub/src/meshbay_hub/static/locales/en.js
@@ -334,6 +334,7 @@ export default {
   'playlists.synced': 'Playlists synced',
   'playlists.sync_failed': 'Could not sync playlists',
   'playlists.err_no_key': 'Sign out and sign in with your password once to sync playlists across devices.',
+  'playlists.err_too_large': '"{name}" is too large to sync to your other devices. Split it into playlists of about {n} tracks.',
   'playlists.track_removed': 'Track removed',
   'playlists.save_queue': 'Save the queue as a playlist…',
   'playlists.cancel': 'Cancel',
diff --git a/packages/meshbay-hub/src/meshbay_hub/static/locales/es.js b/packages/meshbay-hub/src/meshbay_hub/static/locales/es.js
index ff74857..145f464 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/locales/es.js
+++ b/packages/meshbay-hub/src/meshbay_hub/static/locales/es.js
@@ -334,6 +334,7 @@ export default {
   'playlists.synced': 'Listas sincronizadas',
   'playlists.sync_failed': 'No se pudieron sincronizar',
   'playlists.err_no_key': 'Cierra sesión y vuelve a entrar con tu contraseña una vez para sincronizar las listas entre dispositivos.',
+  'playlists.err_too_large': '«{name}» es demasiado grande para sincronizarse con tus otros dispositivos. Divídela en listas de unas {n} canciones.',
   'playlists.track_removed': 'Pista quitada',
   'playlists.save_queue': 'Guardar la cola como lista…',
   'playlists.cancel': 'Cancelar',
diff --git a/packages/meshbay-hub/src/meshbay_hub/static/locales/fr.js b/packages/meshbay-hub/src/meshbay_hub/static/locales/fr.js
index 52af974..a4f32de 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/locales/fr.js
+++ b/packages/meshbay-hub/src/meshbay_hub/static/locales/fr.js
@@ -335,6 +335,7 @@ export default {
   'playlists.synced': 'Playlists synchronisées',
   'playlists.sync_failed': 'Synchronisation impossible',
   'playlists.err_no_key': 'Déconnecte-toi puis reconnecte-toi avec ton mot de passe une fois, pour synchroniser les playlists entre appareils.',
+  'playlists.err_too_large': "« {name} » est trop volumineuse pour être synchronisée vers tes autres appareils. Divise-la en playlists d'environ {n} morceaux.",
   'playlists.track_removed': 'Morceau retiré',
   'playlists.save_queue': 'Enregistrer la file comme playlist…',
   'playlists.cancel': 'Annuler',
diff --git a/packages/meshbay-hub/src/meshbay_hub/static/locales/it.js b/packages/meshbay-hub/src/meshbay_hub/static/locales/it.js
index 75b420d..1da0793 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/locales/it.js
+++ b/packages/meshbay-hub/src/meshbay_hub/static/locales/it.js
@@ -335,6 +335,7 @@ export default {
   'playlists.synced': 'Playlist sincronizzate',
   'playlists.sync_failed': 'Sincronizzazione non riuscita',
   'playlists.err_no_key': 'Esci e rientra con la tua password una volta per sincronizzare le playlist tra dispositivi.',
+  'playlists.err_too_large': '«{name}» è troppo grande per sincronizzarsi con i tuoi altri dispositivi. Dividila in playlist di circa {n} brani.',
   'playlists.track_removed': 'Brano rimosso',
   'playlists.save_queue': 'Salva la coda come playlist…',
   'playlists.cancel': 'Annulla',
diff --git a/packages/meshbay-hub/src/meshbay_hub/static/locales/ja.js b/packages/meshbay-hub/src/meshbay_hub/static/locales/ja.js
index c87d795..971ecb2 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/locales/ja.js
+++ b/packages/meshbay-hub/src/meshbay_hub/static/locales/ja.js
@@ -332,6 +332,7 @@ export default {
   'playlists.synced': 'プレイリストを同期しました',
   'playlists.sync_failed': '同期できませんでした',
   'playlists.err_no_key': 'プレイリストを端末間で同期するには、一度サインアウトしてパスワードでサインインしてください。',
+  'playlists.err_too_large': '「{name}」は大きすぎて他のデバイスと同期できません。{n} 曲程度のプレイリストに分けてください。',
   'playlists.track_removed': '曲を削除しました',
   'playlists.save_queue': 'キューをプレイリストとして保存…',
   'playlists.cancel': 'キャンセル',
diff --git a/packages/meshbay-hub/src/meshbay_hub/static/locales/nl.js b/packages/meshbay-hub/src/meshbay_hub/static/locales/nl.js
index 4fa3d01..dae63d2 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/locales/nl.js
+++ b/packages/meshbay-hub/src/meshbay_hub/static/locales/nl.js
@@ -336,6 +336,7 @@ export default {
   'playlists.synced': 'Afspeellijsten gesynchroniseerd',
   'playlists.sync_failed': 'Synchroniseren mislukt',
   'playlists.err_no_key': 'Meld je één keer af en met je wachtwoord weer aan om afspeellijsten tussen apparaten te synchroniseren.',
+  'playlists.err_too_large': '"{name}" is te groot om met je andere apparaten te synchroniseren. Splits hem op in playlists van ongeveer {n} nummers.',
   'playlists.track_removed': 'Nummer verwijderd',
   'playlists.save_queue': 'Wachtrij opslaan als afspeellijst…',
   'playlists.cancel': 'Annuleren',
diff --git a/packages/meshbay-hub/src/meshbay_hub/static/locales/pl.js b/packages/meshbay-hub/src/meshbay_hub/static/locales/pl.js
index d0fd387..639d518 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/locales/pl.js
+++ b/packages/meshbay-hub/src/meshbay_hub/static/locales/pl.js
@@ -345,6 +345,7 @@ export default {
   'playlists.synced': 'Playlisty zsynchronizowane',
   'playlists.sync_failed': 'Nie udało się zsynchronizować',
   'playlists.err_no_key': 'Wyloguj się i zaloguj raz hasłem, aby synchronizować playlisty między urządzeniami.',
+  'playlists.err_too_large': '„{name}” jest zbyt duża, aby zsynchronizować ją z innymi urządzeniami. Podziel ją na playlisty po około {n} utworów.',
   'playlists.track_removed': 'Utwór usunięty',
   'playlists.save_queue': 'Zapisz kolejkę jako playlistę…',
   'playlists.cancel': 'Anuluj',
diff --git a/packages/meshbay-hub/src/meshbay_hub/static/locales/pt-BR.js b/packages/meshbay-hub/src/meshbay_hub/static/locales/pt-BR.js
index 94c56a6..371b84f 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/locales/pt-BR.js
+++ b/packages/meshbay-hub/src/meshbay_hub/static/locales/pt-BR.js
@@ -336,6 +336,7 @@ export default {
   'playlists.synced': 'Playlists sincronizadas',
   'playlists.sync_failed': 'Não foi possível sincronizar',
   'playlists.err_no_key': 'Saia e entre com sua senha uma vez para sincronizar as playlists entre dispositivos.',
+  'playlists.err_too_large': '"{name}" é grande demais para sincronizar com seus outros dispositivos. Divida-a em playlists de cerca de {n} faixas.',
   'playlists.track_removed': 'Faixa removida',
   'playlists.save_queue': 'Salvar a fila como playlist…',
   'playlists.cancel': 'Cancelar',
diff --git a/packages/meshbay-hub/src/meshbay_hub/static/locales/zh-CN.js b/packages/meshbay-hub/src/meshbay_hub/static/locales/zh-CN.js
index bc77d5f..96ba4fe 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/locales/zh-CN.js
+++ b/packages/meshbay-hub/src/meshbay_hub/static/locales/zh-CN.js
@@ -329,6 +329,7 @@ export default {
   'playlists.synced': '播放列表已同步',
   'playlists.sync_failed': '无法同步',
   'playlists.err_no_key': '请退出并用密码重新登录一次，以便在设备间同步播放列表。',
+  'playlists.err_too_large': '「{name}」太大，无法同步到你的其他设备。请拆分为约 {n} 首歌曲的播放列表。',
   'playlists.track_removed': '已移除曲目',
   'playlists.save_queue': '将队列保存为播放列表…',
   'playlists.cancel': '取消',