Clarify widget save translation action

server.js

@@ -375,6 +375,25 @@ function defaultWidgetCopy(language) {
   };
 }
 
+function legacyCzechWidgetCopy() {
+  return {
+    title: "Potrebujete poradit?",
+    intro: "Napiste nam. Odpovime co nejdrive.",
+    offlineIntro: "Ted nejsme online, ale zpravu nam muzete nechat.",
+    placeholder: "Napiste zpravu...",
+    sendLabel: "Odeslat",
+    dropzoneLabel: "Pridat fotku nebo pretahnout",
+    onlineLabel: "Jsme online",
+    offlineLabel: "Offline",
+    newReplyLabel: "Nova odpoved",
+    typingLabel: "Operator pise...",
+    infoTitle: "GDPR informace",
+    infoText: "Zpravu a technicke udaje relace zpracujeme jen pro odpoved na vas dotaz.",
+    closeLabel: "Zmensit chat",
+    operatorReplyLabel: "odpovida"
+  };
+}
+
 function configuredUsers() {
   const users = [];
   for (let i = 1; i < 50; i += 1) {
@@ -1139,9 +1158,11 @@ function normalizeWidgetCopy(value, settings = {}) {
 
 function normalizeWidgetCopyEntry(value, language) {
   const defaults = defaultWidgetCopy(language === "en" ? "en" : "cs");
+  const legacyCs = language === "cs" ? legacyCzechWidgetCopy() : null;
   const copy = {};
   for (const field of WIDGET_COPY_FIELDS) {
     copy[field] = String(value?.[field] || defaults[field] || "").trim();
+    if (legacyCs && copy[field] === legacyCs[field]) copy[field] = defaults[field];
   }
   return copy;
 }