R-516: the formal forms in Go literals move into the bundle in the te-form

22 Go-literal messages (escrow handler, share password page, export
upload, network-storage uid/remove/attach failures) are bundle keys with
te-form Hungarian and English; a detached attach failure renders in the
reader's language. The NAS refusal says „Válassz". Setup wizard,
recovery-info.txt (R-554) and the SMART/fill-watch wire texts are left.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS

controller/internal/web/handler_export_upload.go

@@ -319,7 +319,7 @@ func (s *Server) apiUploadFinalize(w http.ResponseWriter, r *http.Request) {
 		logx.Warnf(s.logger, "[web] fab upload finalize size mismatch: got %d, declared %d — part deleted",
 			job.received, job.declared)
 		uploadJSON(w, http.StatusUnprocessableEntity, map[string]interface{}{
-			"ok": false, "error": "A feltöltött méret nem egyezik — próbálja újra.",
+			"ok": false, "error": s.msg(r, "api.export.upload_size_mismatch"),
 		})
 		return
 	}