Report OpenAI quota errors in admin

public/admin.css

@@ -767,8 +767,12 @@ label { display: grid; gap: 6px; color: var(--muted); font-size: 13px; }
   white-space: nowrap;
 }
 .translation-meta.translated { border-color: #b9dfca; background: #eef8f2; color: #1e7a47; }
-.translation-meta.failed { border-color: #f0b9b9; background: #fff1f1; color: #b42318; }
+.translation-meta.failed,
+.translation-meta.invalid_key,
+.translation-meta.bad_model { border-color: #f0b9b9; background: #fff1f1; color: #b42318; }
 .translation-meta.missing_key,
+.translation-meta.quota_exceeded,
+.translation-meta.rate_limited,
 .translation-meta.empty { border-color: #f1d29b; background: #fff7e8; color: #9a5b00; }
 .translation-meta.disabled,
 .translation-meta.skipped,

public/admin.js

@@ -431,14 +431,23 @@ async function testOpenAiKey() {
   setOpenAiStatus("Testuji OpenAI klic...");
   const result = await api("/api/admin/ai/test", { method: "POST" }).catch((error) => error);
   if (result?.ok) {
-    setOpenAiStatus(`Klic funguje (${result.key || "sk-..."}), dostupnych modelu: ${result.modelCount}.`);
+    setOpenAiStatus(`Klic funguje (${result.key || "sk-..."}), model ${result.model || "AI"} umi prekladat.`);
     await loadAiModels().catch(() => {});
     return;
   }
   const message = result?.error === "missing_openai_api_key"
     ? "Klic neni ulozeny. Nejdřív ho vloz a klikni na Ulozit AI nastaveni."
     : `Test selhal (${result?.error || "neznamá chyba"}).`;
-  setOpenAiStatus(message);
+  setOpenAiStatus(openAiTestMessage(result) || message);
+}
+
+function openAiTestMessage(result) {
+  if (result?.error === "missing_openai_api_key") return "Klic neni ulozeny. Nejdriiv ho vloz a klikni na Ulozit AI nastaveni.";
+  if (result?.error === "quota_exceeded") return "OpenAI klic je ulozeny, ale chybi kredit nebo billing. Preklady zatim nepobezi.";
+  if (result?.error === "invalid_key") return "OpenAI klic je spatny nebo nema pristup. Vloz novy klic.";
+  if (result?.error === "bad_model") return "Zvoleny OpenAI model neni dostupny pro tento klic. Vyber jiny model.";
+  if (result?.error === "rate_limited") return "OpenAI docasne omezuje pozadavky. Zkus test za chvili.";
+  return "";
 }
 
 function setOpenAiStatus(message) {
@@ -624,6 +633,10 @@ function translationStatusLabel(status, source, target) {
   if (status === "translated") return `preklad: ${source} -> ${target}`;
   if (status === "same_language") return `preklad: ${source} = ${target}`;
   if (status === "failed") return `preklad: ${source} -> ${target} - chyba`;
+  if (status === "quota_exceeded") return "preklad: neni kredit";
+  if (status === "invalid_key") return "preklad: spatny klic";
+  if (status === "bad_model") return "preklad: spatny model";
+  if (status === "rate_limited") return "preklad: limit API";
   if (status === "missing_key") return "preklad: chybi klic";
   if (status === "disabled") return "preklad: vypnuto";
   if (status === "empty") return `preklad: ${source} -> ${target} - prazdny`;