v0.249.0: i18n slice 1 release B — backup pages in English, Hungarian byte-identical (R-556)

Seven backup pages + the restore-progress JS converted against fixtures captured unconverted
(f8ebc47); recovery renders through executeTemplateLang; English retrieval claims registered;
the Fut comparison left unconverted (R-563).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS

controller/internal/i18n/i18n_test.go

@@ -111,6 +111,7 @@ func TestEmbeddedBundles(t *testing.T) {
 }
 
 var fieldRefRe = regexp.MustCompile(`\.[A-Z][A-Za-z0-9_]*(\.[A-Z][A-Za-z0-9_]*)*`)
+
 // verbRe counts printf verbs OUTSIDE template actions ({{printf "%.0f" .X}} is a parameter, not a verb
 // of the message), and without the space flag — „50% szabad" is prose, not „% s".
 var verbRe = regexp.MustCompile(`%[-+#0-9.]*[sdvq]`)