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/networkstub_test.go

@@ -92,7 +92,7 @@ func TestNetworkStorageWarningsIn_UnreachableAloneUnchanged(t *testing.T) {
 // must never reuse the recoverable-unreachable copy; the unreachable line stays byte-identical).
 func TestNetworkBadgeTemplates_DistinctStrings(t *testing.T) {
 	for _, tpl := range []string{"templates/dashboard.html", "templates/stacks.html"} {
-		body, err := os.ReadFile(tpl)
+		body, err := huTemplateSource(tpl)
 		if err != nil {
 			t.Fatal(err)
 		}