feat: implement card revalidation feature

src/api/providers/anthropic.js

@@ -48,8 +48,9 @@ export async function fetchCardData(word, context, config) {
       headers: anthropicHeaders(config.apiKey),
       body: JSON.stringify({
         model,
-        max_tokens: 1024,
-        system:     buildSystemPrompt(config),
+        max_tokens:  1024,
+        temperature: config.temperature ?? 0.3,
+        system:      buildSystemPrompt(config),
         messages: [
           { role: 'user', content: `${target} word: "${word}"\nContext: "${context}"` },
         ],

src/api/providers/google.js

@@ -40,7 +40,7 @@ export async function fetchCardData(word, context, config) {
     ],
     systemInstruction: { parts: [{ text: buildSystemPrompt(config) }] },
     generationConfig: {
-      temperature:    0.3,
+      temperature:    config.temperature ?? 0.3,
       maxOutputTokens: 1024,
     },
   };

src/api/providers/lmStudio.js

@@ -40,7 +40,7 @@ export async function fetchCardData(word, context, config) {
           { role: 'system', content: buildSystemPrompt(config) },
           { role: 'user',   content: `${target} word: "${word}"\nContext: "${context}"` },
         ],
-        temperature: 0.3,
+        temperature: config.temperature ?? 0.3,
         max_tokens:  1024,
       }),
     });

src/api/providers/openai.js

@@ -49,7 +49,7 @@ export async function fetchCardData(word, context, config) {
           { role: 'system', content: buildSystemPrompt(config) },
           { role: 'user',   content: `${target} word: "${word}"\nContext: "${context}"` },
         ],
-        temperature: 0.3,
+        temperature: config.temperature ?? 0.3,
         max_tokens:  1024,
       }),
     });

src/background/background.js

@@ -10,7 +10,7 @@
 
 import { fetchCardData }               from '../api/llmClient.js';
 import { fetchPronunciation }          from '../api/pronunciation.js';
-import { saveCard }                    from '../storage/cardStorage.js';
+import { saveCard, getAllCards }        from '../storage/cardStorage.js';
 import { createCard, validateLlmData } from '../shared/cardSchema.js';
 import { getConfig }                   from '../config/configStorage.js';
 import { t }                           from '../i18n/strings.js';
@@ -41,6 +41,7 @@ chrome.runtime.onStartup.addListener(registerContextMenu);
 // Re-register context menu when settings are saved
 chrome.runtime.onMessage.addListener((msg) => {
   if (msg.type === 'SETTINGS_CHANGED') registerContextMenu();
+  if (msg.type === 'REVALIDATE_CARD')  revalidateCard(msg.cardId, msg.word, msg.context);
 });
 
 // ── Context menu handler ───────────────────────────────────────────────────────
@@ -68,7 +69,7 @@ chrome.contextMenus.onClicked.addListener(async (info, tab) => {
     const wiktIpa = await fetchPronunciation(word, config.targetLang).catch(() => null);
     if (wiktIpa) data.pronunciation = wiktIpa;
 
-    const card = createCard(word, context, tab.url ?? '', data);
+    const card = createCard(word, context, tab.url ?? '', data, wiktIpa != null);
 
     await saveCard(card);
     await chrome.storage.session.remove('lastError');
@@ -123,3 +124,36 @@ function notify(title, message) {
     message,
   });
 }
+
+// ── Card revalidation ─────────────────────────────────────────────────────────
+
+async function revalidateCard(cardId, word, context) {
+  const config = await getConfig().catch(() => null);
+  try {
+    // Fail fast – no LLM call if the card no longer exists
+    const cards    = await getAllCards();
+    const existing = cards.find(c => c.id === cardId);
+    if (!existing) throw new Error('Card not found.');
+
+    const raw  = await fetchCardData(word, context, { ...config, temperature: 0.1 });
+    const data = validateLlmData(raw);
+
+    const updated = {
+      ...existing,
+      translation:   data.translation,
+      // Keep Wiktionary IPA; only overwrite if it originally came from the LLM
+      pronunciation: existing.pronunciationFromLookup ? existing.pronunciation : data.pronunciation,
+      wordClass:     data.wordClass,
+      grammar:       data.grammar,
+      exampleDA:     data.exampleDA,
+      exampleDE:     data.exampleDE,
+      memoryTip:     data.memoryTip,
+    };
+
+    await saveCard(updated);
+    chrome.runtime.sendMessage({ type: 'CARD_REVALIDATED', card: updated }).catch(() => {});
+  } catch (err) {
+    const errorMsg = err.message ?? 'Unknown error.';
+    chrome.runtime.sendMessage({ type: 'CARD_REVALIDATE_ERROR', cardId, error: errorMsg }).catch(() => {});
+  }
+}

src/i18n/strings.js

@@ -50,6 +50,7 @@ const STRINGS = {
     rightClick:  'Rechtsklick auf ein Wort →',
     addTo:       'Zu Ordforråd hinzufügen',
     delete:      'Löschen',
+    revalidate:  'Karte mit KI neu prüfen',
     fetchTip:    'Modelle neu laden',
     noModel:     'LM Studio: Kein Modell geladen.',
     unreachable: 'LM Studio nicht erreichbar. Läuft der Server?',
@@ -89,6 +90,7 @@ const STRINGS = {
     rightClick:  'Right-click a word →',
     addTo:       'Add to Ordforråd',
     delete:      'Delete',
+    revalidate:  'Re-validate with AI',
     fetchTip:    'Reload models',
     noModel:     'LM Studio: No model loaded.',
     unreachable: 'LM Studio unreachable. Is the server running?',
@@ -128,6 +130,7 @@ const STRINGS = {
     rightClick:  'Højreklik på et ord →',
     addTo:       'Føj til Ordforråd',
     delete:      'Slet',
+    revalidate:  'Valider kort igen med AI',
     fetchTip:    'Genindlæs modeller',
     noModel:     'LM Studio: Ingen model indlæst.',
     unreachable: 'LM Studio ikke tilgængelig. Kører serveren?',
@@ -167,6 +170,7 @@ const STRINGS = {
     rightClick:  'Clic droit sur un mot →',
     addTo:       'Ajouter à Ordforråd',
     delete:      'Supprimer',
+    revalidate:  "Revalider avec l'IA",
     fetchTip:    'Recharger les modèles',
     noModel:     'LM Studio : aucun modèle chargé.',
     unreachable: 'LM Studio inaccessible. Le serveur tourne-t-il ?',
@@ -206,6 +210,7 @@ const STRINGS = {
     rightClick:  'Clic derecho en una palabra →',
     addTo:       'Añadir a Ordforråd',
     delete:      'Eliminar',
+    revalidate:  'Revalidar con IA',
     fetchTip:    'Recargar modelos',
     noModel:     'LM Studio: ningún modelo cargado.',
     unreachable: 'LM Studio no disponible. ¿Está corriendo el servidor?',
@@ -245,6 +250,7 @@ const STRINGS = {
     rightClick:  'Clic destro su una parola →',
     addTo:       'Aggiungi a Ordforråd',
     delete:      'Elimina',
+    revalidate:  'Riconvalida con IA',
     fetchTip:    'Ricarica modelli',
     noModel:     'LM Studio: nessun modello caricato.',
     unreachable: 'LM Studio non raggiungibile. Il server è in esecuzione?',
@@ -284,6 +290,7 @@ const STRINGS = {
     rightClick:  'Clique direito em uma palavra →',
     addTo:       'Adicionar ao Ordforråd',
     delete:      'Excluir',
+    revalidate:  'Revalidar com IA',
     fetchTip:    'Recarregar modelos',
     noModel:     'LM Studio: nenhum modelo carregado.',
     unreachable: 'LM Studio inacessível. O servidor está rodando?',
@@ -323,6 +330,7 @@ const STRINGS = {
     rightClick:  'Rechtsklik op een woord →',
     addTo:       'Toevoegen aan Ordforråd',
     delete:      'Verwijderen',
+    revalidate:  'Opnieuw valideren met AI',
     fetchTip:    'Modellen herladen',
     noModel:     'LM Studio: geen model geladen.',
     unreachable: 'LM Studio niet bereikbaar. Draait de server?',
@@ -362,6 +370,7 @@ const STRINGS = {
     rightClick:  'Högerklicka på ett ord →',
     addTo:       'Lägg till i Ordforråd',
     delete:      'Ta bort',
+    revalidate:  'Omvalidera med AI',
     fetchTip:    'Ladda om modeller',
     noModel:     'LM Studio: ingen modell laddad.',
     unreachable: 'LM Studio inte nåbar. Kör servern?',
@@ -401,6 +410,7 @@ const STRINGS = {
     rightClick:  'Høyreklikk på et ord →',
     addTo:       'Legg til i Ordforråd',
     delete:      'Slett',
+    revalidate:  'Revalider med AI',
     fetchTip:    'Last inn modeller på nytt',
     noModel:     'LM Studio: ingen modell lastet.',
     unreachable: 'LM Studio ikke tilgjengelig. Kjører serveren?',
@@ -440,6 +450,7 @@ const STRINGS = {
     rightClick:  'Napsauta hiiren kakkospainikkeella →',
     addTo:       'Lisää Ordforråd-kokoelmaan',
     delete:      'Poista',
+    revalidate:  'Tarkista uudelleen tekoälyllä',
     fetchTip:    'Lataa mallit uudelleen',
     noModel:     'LM Studio: ei mallia ladattu.',
     unreachable: 'LM Studio ei tavoitettavissa. Onko palvelin käynnissä?',
@@ -479,6 +490,7 @@ const STRINGS = {
     rightClick:  'Kliknij prawym przyciskiem słowo →',
     addTo:       'Dodaj do Ordforråd',
     delete:      'Usuń',
+    revalidate:  'Ponowna walidacja przez AI',
     fetchTip:    'Odśwież modele',
     noModel:     'LM Studio: brak załadowanego modelu.',
     unreachable: 'LM Studio niedostępne. Czy serwer działa?',
@@ -518,6 +530,7 @@ const STRINGS = {
     rightClick:  'Pravý klik na slovo →',
     addTo:       'Přidat do Ordforråd',
     delete:      'Smazat',
+    revalidate:  'Znovu ověřit pomocí AI',
     fetchTip:    'Znovu načíst modely',
     noModel:     'LM Studio: žádný model není načten.',
     unreachable: 'LM Studio není dostupné. Běží server?',
@@ -557,6 +570,7 @@ const STRINGS = {
     rightClick:  'Щёлкните правой кнопкой по слову →',
     addTo:       'Добавить в Ordforråd',
     delete:      'Удалить',
+    revalidate:  'Перепроверить с ИИ',
     fetchTip:    'Обновить модели',
     noModel:     'LM Studio: модель не загружена.',
     unreachable: 'LM Studio недоступен. Запущен ли сервер?',
@@ -596,6 +610,7 @@ const STRINGS = {
     rightClick:  'Bir kelimeye sağ tıklayın →',
     addTo:       'Ordforråd\'a Ekle',
     delete:      'Sil',
+    revalidate:  'Yapay zeka ile yeniden doğrula',
     fetchTip:    'Modelleri yenile',
     noModel:     'LM Studio: yüklü model yok.',
     unreachable: 'LM Studio\'ya ulaşılamıyor. Sunucu çalışıyor mu?',
@@ -635,6 +650,7 @@ const STRINGS = {
     rightClick:  'Kattintson jobb gombbal egy szóra →',
     addTo:       'Hozzáadás az Ordforråd-hoz',
     delete:      'Törlés',
+    revalidate:  'Újraellenőrzés AI-val',
     fetchTip:    'Modellek újratöltése',
     noModel:     'LM Studio: nincs betöltve modell.',
     unreachable: 'LM Studio nem elérhető. Fut a szerver?',
@@ -674,6 +690,7 @@ const STRINGS = {
     rightClick:  'Δεξί κλικ σε μια λέξη →',
     addTo:       'Προσθήκη στο Ordforråd',
     delete:      'Διαγραφή',
+    revalidate:  'Επανεπαλήθευση με ΑΙ',
     fetchTip:    'Επαναφόρτωση μοντέλων',
     noModel:     'LM Studio: δεν φορτώθηκε μοντέλο.',
     unreachable: 'Το LM Studio δεν είναι προσβάσιμο. Τρέχει ο διακομιστής;',
@@ -713,6 +730,7 @@ const STRINGS = {
     rightClick:  'Hægrismelltu á orð →',
     addTo:       'Bæta við Ordforråd',
     delete:      'Eyða',
+    revalidate:  'Endurstaðfesta með gervigreind',
     fetchTip:    'Hlaða líkön aftur',
     noModel:     'LM Studio: ekkert líkan hlaðið.',
     unreachable: 'LM Studio er ekki aðgengilegt. Er þjónninn að keyra?',
@@ -752,6 +770,7 @@ const STRINGS = {
     rightClick:  '単語を右クリック →',
     addTo:       'Ordforråd に追加',
     delete:      '削除',
+    revalidate:  'AIで再検証',
     fetchTip:    'モデルを再読み込み',
     noModel:     'LM Studio: モデルが読み込まれていません。',
     unreachable: 'LM Studio に接続できません。サーバーは起動していますか？',
@@ -792,6 +811,7 @@ const STRINGS = {
     rightClick:  '단어를 우클릭 →',
     addTo:       'Ordforråd에 추가',
     delete:      '삭제',
+    revalidate:  'AI로 재검증',
     fetchTip:    '모델 새로고침',
     noModel:     'LM Studio: 로드된 모델이 없습니다.',
     unreachable: 'LM Studio에 연결할 수 없습니다. 서버가 실행 중인가요?',
@@ -832,6 +852,7 @@ const STRINGS = {
     rightClick:  '右键单击单词 →',
     addTo:       '添加到Ordforråd',
     delete:      '删除',
+    revalidate:  'AI重新验证',
     fetchTip:    '重新加载模型',
     noModel:     'LM Studio：未加载模型。',
     unreachable: 'LM Studio无法连接。服务器是否正在运行？',
@@ -872,6 +893,7 @@ const STRINGS = {
     rightClick:  'انقر بزر الماوس الأيمن على كلمة →',
     addTo:       'إضافة إلى Ordforråd',
     delete:      'حذف',
+    revalidate:  'إعادة التحقق بالذكاء الاصطناعي',
     fetchTip:    'إعادة تحميل النماذج',
     noModel:     'LM Studio: لم يتم تحميل نموذج.',
     unreachable: 'LM Studio غير متاح. هل الخادم يعمل؟',

src/popup/popup.js

@@ -76,6 +76,15 @@ async function init() {
     if (msg.type === 'CARD_ERROR') {
       showErrorBanner(`${currentStrings.error}: ${msg.error}`);
     }
+    if (msg.type === 'CARD_REVALIDATED') {
+      revalidatingIds.delete(msg.card.id);
+      getAllCards().then(cards => render(cards)).catch(() => {});
+    }
+    if (msg.type === 'CARD_REVALIDATE_ERROR') {
+      revalidatingIds.delete(msg.cardId);
+      showToast(`${currentStrings.error}: ${msg.error}`, true);
+      getAllCards().then(cards => render(cards)).catch(() => {});
+    }
   });
 }
 
@@ -271,6 +280,11 @@ elBtnSave.addEventListener('click', async () => {
   showToast(currentStrings.saved);
 });
 
+// ── Revalidation state ────────────────────────────────────────────────────────
+
+/** IDs of cards currently being revalidated by the AI */
+const revalidatingIds = new Set();
+
 // ── Render ────────────────────────────────────────────────────────────────────
 
 function render(cards) {
@@ -295,7 +309,8 @@ function render(cards) {
 }
 
 function buildCard(card) {
-  const s  = currentStrings;
+  const s             = currentStrings;
+  const isRevalidating = revalidatingIds.has(card.id);
   const li = document.createElement('li');
   li.className  = 'bg-white dark:bg-[#292a2d] rounded-xl border border-slate-200 dark:border-[#3c4043] shadow-sm overflow-hidden';
   li.dataset.id = card.id;
@@ -306,6 +321,8 @@ function buildCard(card) {
       <div class="flex items-baseline gap-2">
         <span class="text-slate-900 dark:text-[#e8eaed] font-bold text-[15px] leading-snug grow">${esc(card.word)}</span>
         <span class="text-[10px] text-slate-400 dark:text-[#9aa0a6] truncate max-w-[140px] text-right" title="${esc(card.wordClass)}">${esc(card.wordClass)}</span>
+        <button class="btn-revalidate text-slate-300 dark:text-[#5f6368] hover:text-blue-400 transition-colors text-sm leading-none shrink-0 cursor-pointer disabled:opacity-40 disabled:cursor-default"
+          data-id="${esc(card.id)}" title="${esc(s.revalidate)}"${isRevalidating ? ' disabled' : ''}>${isRevalidating ? '<span class="inline-block animate-spin">↻</span>' : '↻'}</button>
         <button class="btn-delete text-slate-300 dark:text-[#5f6368] hover:text-rose-400 transition-colors text-sm leading-none shrink-0 cursor-pointer"
           data-id="${esc(card.id)}" title="${esc(s.delete)}">✕</button>
       </div>
@@ -329,6 +346,9 @@ function buildCard(card) {
     </div>
   `;
 
+  if (!isRevalidating) {
+    li.querySelector('.btn-revalidate').addEventListener('click', () => handleRevalidate(card));
+  }
   li.querySelector('.btn-delete').addEventListener('click', () => handleDelete(card.id));
   return li;
 }
@@ -376,6 +396,17 @@ function removeSkeleton(word) {
 
 elExport.addEventListener('click', handleExport);
 
+async function handleRevalidate(card) {
+  revalidatingIds.add(card.id);
+  render(await getAllCards().catch(() => []));
+  chrome.runtime.sendMessage({
+    type:    'REVALIDATE_CARD',
+    cardId:  card.id,
+    word:    card.word,
+    context: card.context,
+  }).catch(() => {});
+}
+
 async function handleDelete(id) {
   await deleteCard(id);
   try {