新增英语单词打卡模块:3694词/247天,发音/详情/跟读录音/每日检测

- 数据源:解析 3500 词 PDF 得 3694 词,按每天 15 词分 247 天,覆盖全部单词
- 孩子端 /words 地图 + 当天学习页:点词标准发音(有道语音)、详情(释义/
  形近词/例句)、学会标记、跟读录音(MediaRecorder 直传 OSS)、每日检测
  (选释义,达标点亮并计入英语打卡)
- 家长端课程管理可回放孩子跟读录音
- 形近词运行时编辑距离计算;例句按需取词典 API

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/app/parent/dashboard.tsx

@@ -54,6 +54,7 @@ export type DevicesData = {
   }[];
 };
 export type WeeklyRow = { childName: string; weekKey: string; score: number; passed: boolean };
+export type RecordingRow = { childName: string; word: string; url: string; at: string };
 
 const tabCls = "data-[state=active]:bg-white data-[state=active]:text-indigo-600 data-[state=active]:shadow-soft";
 
@@ -72,11 +73,13 @@ export function ParentDashboard({
   templates,
   devices,
   weekly,
+  recordings,
 }: {
   overview: OverviewData;
   templates: TemplatesData;
   devices: DevicesData;
   weekly: WeeklyRow[];
+  recordings: RecordingRow[];
 }) {
   return (
     <main className="relative mx-auto max-w-3xl space-y-5 p-4 pb-10">
@@ -130,6 +133,19 @@ export function ParentDashboard({
                   ))}
                 </div>
               </div>
+              <div className="rounded-xl border border-slate-100 bg-white p-4 shadow-soft sm:col-span-2">
+                <p className="font-bold text-slate-900">🎙️ 单词跟读录音</p>
+                <div className="mt-2 space-y-2">
+                  {recordings.length === 0 && <p className="text-xs text-muted-foreground">暂无跟读录音</p>}
+                  {recordings.map((r, i) => (
+                    <div key={i} className="flex items-center gap-2 text-sm">
+                      <span className="w-16 shrink-0 text-xs text-muted-foreground">{r.childName}</span>
+                      <span className="w-20 shrink-0 font-medium text-slate-800">{r.word}</span>
+                      <audio controls src={r.url} className="h-8 flex-1" />
+                    </div>
+                  ))}
+                </div>
+              </div>
             </div>
           </Section>