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-core/tests/aff4.rs

@@ -1,4 +1,4 @@
-//! AFF4: imagens de referência da Evimetry (github.com/aff4/ReferenceImages) e ida e volta.
+//! AFF4: Evimetry reference images (`github.com/aff4/ReferenceImages`) and write/read roundtrip.
 
 use guara_core::aff4::{write_aff4, Aff4Options, Aff4Source};
 use guara_core::source::{open_path, read_vec, MemSource, Source};
@@ -28,11 +28,11 @@ fn reads_reference_images_and_stored_hash_matches() {
             Some(true),
             "{name}: hash do fluxo"
         );
-        // setor 0 legível pelo caminho genérico
+        // sector 0 is readable through the generic `source::open` entrypoint
         let s = open_path(&p).unwrap();
         let head = read_vec(s.as_ref(), 0, 4096).unwrap();
         assert_eq!(head.len(), 4096);
-        // leitura em vãos do mapa devolve zeros
+        // reading unmapped gaps in a sparse AFF4 map returns zeros
         let far = read_vec(s.as_ref(), 200 << 20, 512).unwrap();
         assert_eq!(far.len(), 512);
         eprintln!(