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/web/handlers.go

@@ -993,6 +993,7 @@ func offboxCeremonyWaitState(t *settings.OffboxTarget) (awaiting, timedOut bool)
 // participation toggles and the manual-target form.
 func (s *Server) backupsRemoteHandler(w http.ResponseWriter, r *http.Request) {
 	data := s.backupsCommonData("backups-remote", "Biztonsági mentés — Távoli mentés", r)
+	data["TitleKey"] = "page.title.backups_remote" // i18n: the Hungarian title above is what hu renders
 	s.backupsOffboxData(data)
 	// Escrow ceremony card states (v0.127.0): the Scenario-F stale flag + the agent version gate.
 	data["EscrowStale"] = s.escrowStale()
@@ -1040,6 +1041,7 @@ func (s *Server) backupsRemoteHandler(w http.ResponseWriter, r *http.Request) {
 // 1./2./3. tier rows.
 func (s *Server) backupsAppsHandler(w http.ResponseWriter, r *http.Request) {
 	data := s.backupsCommonData("backups-apps", "Biztonsági mentés — Alkalmazások", r)
+	data["TitleKey"] = "page.title.backups_apps" // i18n: the Hungarian title above is what hu renders
 	s.backupsOffboxData(data) // the tier-3 rows render $.Offbox status
 
 	if fullStatus, ok := data["Backup"].(*backup.FullBackupStatus); ok && fullStatus != nil {
@@ -1072,6 +1074,7 @@ func (s *Server) backupsAppsHandler(w http.ResponseWriter, r *http.Request) {
 // restore-to-verify list and the .fab export/import loop.
 func (s *Server) backupsRestoreHandler(w http.ResponseWriter, r *http.Request) {
 	data := s.backupsCommonData("backups-restore", "Biztonsági mentés — Visszaállítás", r)
+	data["TitleKey"] = "page.title.backups_restore" // i18n: the Hungarian title above is what hu renders
 	// R-550: restores the box was running when it stopped — shown until that app is restored again.
 	if s.backupMgr != nil {
 		data["InterruptedRestores"] = s.backupMgr.InterruptedRestores()