Merge branch 'fix/large-download-paths'

Concurrent-transfer limits, with the queue, the pause and the flag day.

A node now caps how many transfers it runs at once (8 downloads, 8 uploads,
node-wide) and how many one member may run in one group (2 by default,
operator-signed). Beyond that the node answers "queued" and the client waits its
turn, visibly, in the transfers panel — and a slot that frees starts whatever is
next, skipping past a member who is at their own cap rather than letting them
stall everyone behind them.

Browsing is never subject to a slot: not the poster grid, not the covers, not
opening a photo to look at it. That is structural — a transfer is what the
transfers widget shows — and the exemption is bounded rather than open, at two
files in flight per session, because an exemption with no bound is a leaseless
branch under another name.

Transfers can be cancelled, and now paused and resumed. A paused one holds
nothing: its slot goes back at once and resuming rejoins the queue at the tail.
Uploads survive the connection that started them and resume where the node
stopped, asked for inside the seal rather than on a clear message. What they
leave behind when they are abandoned is reaped, which closes a disk leak that
predates this work.

MNP 3.0 makes the lease compulsory and refuses 2.x at the handshake, with the
desktop client checking `client.minimum` before connecting so an un-updated one
says "update" instead of failing every connection in a protocol vocabulary.

Fourteen defects were found on the way, eight of them by a person clicking
Download and pasting a console — none of which 2075 tests could reach. Section
12 of ~/next/improve-downloads.md is that report, including the three this work
introduced itself and the one that turned out to be caused by an instruction to
hard-reload after each deployment.

Node suite 1209 passed, hub suite 866 passed.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HCGdheDLxGReuKHga3BtST

1 files changed, 25 insertions, 1 deletions

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 d72a6e7..f179c6f 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
@@ -162,6 +162,8 @@ export default {
   'group.mkdir': 'Nova pasta',
   'group.mkdir_prompt': 'Nome da nova pasta',
   'group.mkdir_offline': 'Sem conexão com o nó.',
+  'group.download_offline': 'Sem conexão com o nó — o download não pode começar. Ele reconecta sozinho; tente de novo em instantes.',
+  'group.download_write_stalled': 'O arquivo parou de ser gravado no disco ({seconds}s sem progresso). O download foi interrompido em vez de ficar travado; tente de novo.',
   'device.add_title': 'This browser is not linked to this node yet',
   'device.add_hint': 'Your account is known here, but this browser holds a different key. Approve it from a device already linked — no operator needed.',
   'device.add_btn': 'Get a linking code',
@@ -216,6 +218,8 @@ export default {
   'video.close': 'Fechar (Esc)',
   'preview.pdf_fallback': 'Este navegador não exibirá o PDF na própria página. Baixe '
     + 'o arquivo — de todo modo ele foi descriptografado aqui.',
+  'preview.too_large': 'Este arquivo tem {size}, mais do que esta página consegue manter na memória ({limit}). Baixe-o em vez disso — um download é gravado direto no disco.',
+  'download.too_large_for_memory': '"{name}" tem {size}. Este navegador só consegue salvar um arquivo desse tamanho gravando-o direto no disco, e aqui ele não tem como — precisaria manter o arquivo inteiro na memória. Recarregue a página e tente novamente; se não resolver, use o aplicativo para computador.',
   'group.upload_indexing': 'indexando…',
   'video.err_transport': 'Transporte não conectado',
   'video.err_mse': 'Codec sem suporte para transmissão: {codec}',
@@ -313,7 +317,7 @@ export default {
     + 'arquivo, inclusive quando você baixa uma seleção.',
   'settings.dl_folder': 'Pasta: {name}',
   'settings.dl_no_folder': 'Nenhuma pasta escolhida — os downloads vão para onde o '
-    + 'seu navegador os colocar',
+    + 'seu navegador os colocar, e não podem ser pausados',
   'settings.dl_choose': 'Escolher pasta',
   'settings.dl_change': 'Alterar',
   'settings.dl_forget': 'Esquecer',
@@ -572,6 +576,24 @@ export default {
   'transfers.open': 'Abrir',
   'transfers.done': 'Concluída',
   'transfers.cancelled': 'Cancelada',
+  'transfers.preparing': 'Preparando…',
+  'transfers.waiting_own_slots': 'Aguardando — seus espaços estão ocupados',
+  'transfers.waiting_node': 'Aguardando — {n} na frente',
+  'transfers.summary': '{running} em andamento · {waiting} aguardando',
+  'transfers.group_running': 'Em andamento',
+  'transfers.group_waiting': 'Aguardando',
+  'transfers.group_paused': 'Pausados',
+  'transfers.group_finished': 'Concluídos',
+  'transfers.cancel_one': 'Cancelar {name}',
+  'transfers.pause': 'Pausar',
+  'transfers.resume': 'Retomar',
+  'transfers.paused': 'Pausado',
+  'transfers.not_pausable': 'Não pode ser pausado — escolha uma pasta de downloads em Configurações',
+  'transfers.pause_one': 'Pausar {name}',
+  'transfers.resume_one': 'Retomar {name}',
+  'transfers.eta_seconds': 'faltam {n} s',
+  'transfers.eta_minutes': 'faltam {n} min',
+  'transfers.eta_hours': 'faltam {n} h',
   'transfers.failed': 'Falhou',
   'group.select': 'Selecionar',
   'group.select_done': 'Concluir',
@@ -733,6 +755,8 @@ export default {
   'node.setting_pair_ttl': 'Pairing code TTL',
   'node.setting_device_ttl': 'Device request TTL',
   'node.setting_max_streams': 'Max concurrent streams',
+  'node.setting_max_downloads': 'Máximo de downloads simultâneos',
+  'node.setting_max_uploads': 'Máximo de envios simultâneos',
   'node.setting_transcode': 'Transcode incompatible video',
   'node.setting_unit_hours': 'hours',
   'node.setting_unit_minutes': 'min',