feat: add mastery feature to recitation wheel

templates/recitation.html

@@ -51,6 +51,13 @@
                     </div>
                     <button id="spinBtn" class="btn btn-spin">转动转盘</button>
                     <div id="currentItem" class="current-item"></div>
+                    <div id="masteryButtons" class="mastery-buttons" style="display: none;">
+                        <button id="masteredBtn" class="btn btn-mastered">✅ 背会了</button>
+                        <button id="forgotBtn" class="btn btn-forgot">❌ 忘记了</button>
+                    </div>
+                    <div id="masteryInfo" class="mastery-info">
+                        <span id="remainingCount">剩余 <span id="remainingNum">0</span> 个知识点</span>
+                    </div>
                 </div>
 
                 <!-- 排序结果显示 -->