feat(cefr): CEFR level testing and automated gap ingestion engine (Task 15)

app/static/js/modules/api.js

@@ -213,5 +213,40 @@ export const api = {
                 body: JSON.stringify(payload)
             });
         }
+    },
+
+    // CEFR Level Tests & Gap Ingestion (Task 15)
+    cefr: {
+        async getLevels() {
+            const resp = await fetch('/api/cefr/levels');
+            if (resp.ok) return await resp.json();
+            throw new Error(`Failed to load CEFR levels: ${resp.status}`);
+        },
+        async getQuiz(level = 'A1', count = 10, mode = 'all') {
+            const resp = await fetch(`/api/cefr/quiz?level=${encodeURIComponent(level)}&count=${count}&mode=${encodeURIComponent(mode)}`);
+            if (resp.ok) return await resp.json();
+            throw new Error(`Failed to load CEFR quiz: ${resp.status}`);
+        },
+        async submitAnswer(questionId, selectedOption) {
+            const resp = await fetch('/api/cefr/answer', {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                body: JSON.stringify({
+                    question_id: questionId,
+                    selected_option: selectedOption
+                })
+            });
+            if (resp.ok) return await resp.json();
+            throw new Error(`Failed to submit answer: ${resp.status}`);
+        },
+        async resetLevel(level) {
+            const resp = await fetch('/api/cefr/reset', {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                body: JSON.stringify({ level })
+            });
+            if (resp.ok) return await resp.json();
+            throw new Error(`Failed to reset level: ${resp.status}`);
+        }
     }
 };