feat: copy a file's or folder's #/name@owner link from Files, Music, Photos and Search

"Copy link" puts the address group-link.js resolves on the clipboard, on the
hub's origin rather than the page's, so a link copied in the desktop
application is not app://meshbay. Files offers it for one row, from the
right-click menu or the toolbar with one row ticked (a phone's way in);
Music on one track's menu, whose dots a phone has; Photos on a right-clicked
tile and in the lightbox's bar. The video player and the file preview carry
a link button next to Download.

Applications get a `linkFor(entry | folderPath)` prop (MESHBAY_DESIGN.md
§9.2) and offer the action only when it names a link. The group page builds
it from the hub's row; Search from each result's own group and its path
before the merged views prefixed it, and names no link for a folder of the
merged tree, which a group name alone does not identify.

harness/copy_link_probe.py mounts the three applications in Chrome and reads
what reached the clipboard.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 3 insertions, 0 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 824c69a..c7cdf01 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
@@ -212,6 +212,9 @@ export default {
   'group.download_offline': 'Sem conexão com o nó — o download não pode começar. Ele reconecta sozinho; tente de novo em instantes.',
   'group.link_unknown': "Este link aponta para um grupo do qual você não é membro, ou que não tem mais esse nome.",
   'group.link_path_unknown': "Não há nada em {path} neste grupo — o arquivo pode ter sido movido, renomeado ou excluído.",
+  'link.copy': "Copiar link",
+  'link.copied': "Link copiado",
+  'link.copy_failed': "Não foi possível copiar — o link é {url}",
   '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.',