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/dashboard_diskknown_test.go

@@ -20,7 +20,7 @@ import (
 // now hit twice (R-262, and the OOB fixture in hub v0.99.0).
 func diskMeterBlock(t *testing.T) string {
 	t.Helper()
-	raw, err := templateFS.ReadFile("templates/dashboard.html")
+	raw, err := huTemplateSource("templates/dashboard.html")
 	if err != nil {
 		t.Fatalf("read dashboard.html: %v", err)
 	}