v0.248.0: i18n slice 1 release A — apps and settings in English, Hungarian byte-identical (R-556)

Ten pages converted against fixtures captured from unconverted templates (6be55a0); marker
coverage test; English page mask narrowed; English retrieval-promise stems; common keys;
title keys and infraMeta from the bundle; old wording tests read the Hungarian expansion.

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

controller/internal/web/storage_handlers_test.go

@@ -342,7 +342,7 @@ func TestStorageInit_PollsAgentFormatStatusOnTimeout(t *testing.T) {
 // /storage, not /settings. One assertion per template.
 func TestStorageWizardBackAnchors_PointToStorage(t *testing.T) {
 	for _, file := range []string{"templates/storage_init.html", "templates/storage_attach.html"} {
-		b, err := templateFS.ReadFile(file)
+		b, err := huTemplateSource(file)
 		if err != nil {
 			t.Fatalf("read %s: %v", file, err)
 		}