feat(student): 新增学生词汇掌握详情及热力图展示功能

- 新增FindStudentMasteryDetailReqVO和FindStudentMasteryDetailRspVO数据类
- 学生接口新增/ student/mastery/detail，用于查询学生词汇掌握详情
- StudentService及实现类添加查询词汇掌握详情的方法
- WordMasteryLogDOMapper新增selectAllByStudentId方法支持查询
- SaTokenConfigure增加对新接口的免认证配置
- 前端api新增getStudentWordMastery方法
- 学生页面新增WordMasteryHeatmap组件并展示词汇掌握热力图
- 创建WordMasteryHeatmap组件，支持动态请求数据及Echarts热力图渲染
- 热力图按记忆强度排序，提供丰富的鼠标悬停提示信息

enlish-vue/src/pages/student.vue

@@ -32,6 +32,10 @@
                         <div class="text-md font-semibold mb-3">学生学案记录</div>
                         <PlanHistoryChart :student-id="route.params.id" />
                     </div>
+                    <div class="bg-white dark:bg-gray-800 rounded-lg shadow p-6">
+                        <div class="text-md font-semibold mb-3">词汇掌握热力图</div>
+                        <WordMasteryHeatmap :student-id="route.params.id" :columns="50" />
+                    </div>
                     <div class="bg-white dark:bg-gray-800 rounded-lg shadow p-6">
                         <div class="flex items-center justify-between mb-3">
                             <div class="text-md font-semibold">学习分析</div>
@@ -61,6 +65,7 @@ import { getStudentDetail, getStudentStudyAnalyze } from '@/api/student'
 import { getStudentExamHistory } from '@/api/exam'
 import ExamHistoryChart from '@/layouts/components/student/ExamHistoryChart.vue'
 import PlanHistoryChart from '@/layouts/components/student/PlanHistoryChart.vue'
+import WordMasteryHeatmap from '@/layouts/components/student/WordMasteryHeatmap.vue'
 import MarkdownIt from 'markdown-it'
 
 const loading = ref(false)