feat(reader): multi-word and phrasal verb detector in reader (Task 14)

app/static/js/modules/api.js

@@ -96,13 +96,21 @@ export const api = {
 
     // Dictionary Lookup & AI Sentence Translation
     lookup: {
-        async search(term) {
-            const resp = await fetch(`/api/lookup?term=${encodeURIComponent(term)}`);
+        async search(term, context = '') {
+            let url = `/api/lookup?term=${encodeURIComponent(term)}`;
+            if (context) {
+                url += `&context=${encodeURIComponent(context)}`;
+            }
+            const resp = await fetch(url);
             if (resp.ok) {
                 return await resp.json();
             }
             throw new Error(`Lookup failed: ${resp.status}`);
         },
+        async detectPhrasalVerb(sentence, word) {
+            const resp = await fetch(`/api/detect-phrasal-verb?sentence=${encodeURIComponent(sentence)}&word=${encodeURIComponent(word)}`);
+            return resp.ok ? await resp.json() : { detected: false, phrasal_verb: null };
+        },
         async translateSentence(sentence, targetWord = '') {
             const resp = await fetch('/api/translate-sentence', {
                 method: 'POST',