fix(reader): fix reader word popup translation key and sanitize token lookup

app/static/js/app.js

@@ -1897,7 +1897,8 @@ document.addEventListener('DOMContentLoaded', () => {
             // Tokenize words while preserving spaces & punctuation
             const tokens = paraText.split(/([A-Za-z0-9'-]+)/);
             tokens.forEach(token => {
-                if (/^[A-Za-z0-9'-]+$/.test(token) && token.length > 1) {
+                const isWord = /^[A-Za-z0-9'-]+$/.test(token) && token.replace(/[^A-Za-z0-9]/g, '').length >= 1;
+                if (isWord) {
                     const span = document.createElement('span');
                     span.className = 'reader-word';
                     span.dataset.word = token;
@@ -1951,13 +1952,16 @@ document.addEventListener('DOMContentLoaded', () => {
     }
 
     async function openWordPopup(term, contextSentence, targetElement) {
+        const cleanTerm = (term || '').replace(/^['"“«`\s\-_.,;:!?()[\]{}]+|['"”»`\s\-_.,;:!?()[\]{}]+$/g, '').trim();
+        if (!cleanTerm) return;
+
         popupCurrentData = {
-            term: term,
+            term: cleanTerm,
             contextSentence: contextSentence,
             targetElement: targetElement,
         };
 
-        popupTerm.textContent = term;
+        popupTerm.textContent = cleanTerm;
         popupPhonetic.textContent = '';
         popupTranslation.textContent = '';
         popupContext.textContent = contextSentence ? `“${contextSentence}”` : '';
@@ -1985,13 +1989,14 @@ document.addEventListener('DOMContentLoaded', () => {
         }
 
         try {
-            const resp = await fetch(`/api/lookup?q=${encodeURIComponent(term)}`);
+            const resp = await fetch(`/api/lookup?q=${encodeURIComponent(cleanTerm)}`);
             if (resp.ok) {
                 const data = await resp.json();
                 popupCurrentData.lookup = data;
 
+                const trans = data.translation || data.translation_ru || (data.translations_list && data.translations_list.length > 0 ? data.translations_list.join(', ') : '');
                 popupPhonetic.textContent = data.phonetic || '';
-                popupTranslation.textContent = data.translation_ru || 'Перевод не найден';
+                popupTranslation.textContent = trans || 'Перевод не найден';
                 popupLoading.classList.add('hidden');
                 popupContent.classList.remove('hidden');
 
@@ -2035,7 +2040,7 @@ document.addEventListener('DOMContentLoaded', () => {
 
             const payload = {
                 term: d.term,
-                translation: lookup.translation_ru || popupTranslation.textContent,
+                translation: lookup.translation || lookup.translation_ru || popupTranslation.textContent,
                 context_sentence: d.contextSentence || '',
                 phonetic: lookup.phonetic || '',
                 audio_url: lookup.audio_url || '',