chore(i18n): finish translating code comments and scripts to English

Completes the English-only standardization for code, comments, scripts
and CI templates (UI/CLI-facing strings stay bilingual pt-BR/en,
untouched). Covers the remaining crates/, apps/gui/ui/ and
apps/gui/src-tauri/ comments, .gitea/ workflow and template comments,
.githooks/ hooks, and the scripts/ source comments for the files
already renamed in a prior commit (check.sh, generate-logo.py,
install-hooks.sh).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VAyr8d7HuAdUGB6aA5xmDD

apps/gui/ui/vendor/README.md

@@ -1,10 +1,10 @@
 # Paged.js
 
-`paged.polyfill.min.js` é o polyfill do [Paged.js](https://pagedjs.org/), versão
-0.4.3, usado para paginar os relatórios em A4 no navegador.
+`paged.polyfill.min.js` is the [Paged.js](https://pagedjs.org/) polyfill, version
+0.4.3, used to paginate A4 reports in the browser.
 
-- Projeto: https://gitlab.coko.foundation/pagedjs/pagedjs
-- Licença: MIT (texto em `PAGEDJS-LICENSE`)
-- Arquivo: `paged.polyfill.min.js` (build de distribuição, não modificado)
+- Project: https://gitlab.coko.foundation/pagedjs/pagedjs
+- License: MIT (text in `PAGEDJS-LICENSE`)
+- File: `paged.polyfill.min.js` (unmodified distribution build)
 
-O arquivo é vendorizado para que o relatório funcione offline, sem CDN.
+Vendorized so report generation works completely offline without external CDNs.