feat: add daily challenge and blitz mode (2min speedrun)

app/api/daily/leaderboard/route.ts

@@ -0,0 +1,23 @@
+import { NextResponse } from "next/server";
+import { prisma } from "../../../../lib/prisma";
+
+export async function GET() {
+  const date = new Date().toISOString().slice(0, 10);
+  const puzzle = await prisma.dailyPuzzle.findUnique({ where: { date } });
+  if (!puzzle) return NextResponse.json([]);
+
+  const results = await prisma.dailyResult.findMany({
+    where: { puzzleId: puzzle.id, won: true },
+    include: { user: { select: { name: true } } },
+    orderBy: [{ clicks: "asc" }, { timeSeconds: "asc" }],
+    take: 20,
+  });
+
+  return NextResponse.json(results.map((r, i) => ({
+    rank: i + 1,
+    name: r.user.name,
+    clicks: r.clicks,
+    timeSeconds: r.timeSeconds,
+    userId: r.userId,
+  })));
+}