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

crates/guara-cli/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "guara-cli"
-description = "Guará: recuperação de arquivos pelo terminal (e servidor da interface gráfica)"
+description = "Guará: command-line file recovery tool and web UI server"
 version.workspace = true
 edition.workspace = true
 license.workspace = true