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/words/[day]/page.tsx

@@ -0,0 +1,41 @@
+import { redirect } from "next/navigation";
+import { and, eq } from "drizzle-orm";
+import { db } from "@/db";
+import { wordProgress } from "@/db/schema";
+import { getSessionUser } from "@/lib/auth";
+import { buildWordTest, similarWords, wordsByDay } from "@/lib/words";
+import { WordDayClient } from "../word-day";
+
+export default async function WordDayPage({ params }: { params: Promise<{ day: string }> }) {
+  const user = await getSessionUser();
+  if (!user) redirect("/join");
+  if (user.role !== "child") redirect("/parent");
+
+  const day = Number((await params).day);
+  const words = wordsByDay(day);
+  if (words.length === 0) redirect("/words");
+
+  const [prog] = await db
+    .select()
+    .from(wordProgress)
+    .where(and(eq(wordProgress.childUserId, user.id), eq(wordProgress.day, day)))
+    .limit(1);
+  const learned: string[] = prog?.learned ? JSON.parse(prog.learned) : [];
+
+  const items = words.map((w) => ({
+    word: w.word,
+    meaning: w.meaning,
+    similar: similarWords(w.word, 3).map((s) => ({ word: s.word, meaning: s.meaning })),
+  }));
+
+  return (
+    <WordDayClient
+      day={day}
+      items={items}
+      learned={learned}
+      test={buildWordTest(day)}
+      passed={prog?.passed ?? false}
+      score={prog?.score ?? null}
+    />
+  );
+}