Add Obsidian Wrapped feature (inside-LMS, client-side vault parsing)

- WrappedRun Prisma model + migration (aggregates only, no note names/text)
- /wrapped authed route: FSA + webkitdirectory + drag-drop reader, Web Worker parser
- archetype + score heuristics, ДС-2 result card
- POST /api/wrapped/run (userId from session), public /share/wrapped/[token]
- next/og OG image (Satori+resvg-wasm, alpine-safe) + Fira Mono ttf
- middleware: /share/wrapped public

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

src/app/share/wrapped/[token]/opengraph-image.tsx

@@ -0,0 +1,42 @@
+import { ImageResponse } from "next/og";
+import { readFile } from "fs/promises";
+import path from "path";
+import { prisma } from "@/lib/prisma";
+import { wrappedCard } from "@/lib/wrapped-card";
+import type { Archetype, Period } from "@/app/(student)/wrapped/_client/types";
+
+export const size = { width: 1080, height: 1920 };
+export const contentType = "image/png";
+export const dynamic = "force-dynamic";
+
+// Серверный PNG 1080×1920 карточки Wrapped по shareToken (для OG-превью в соцсетях
+// и для скачивания участником). Рендерится через next/og (Satori + resvg-wasm).
+export default async function OG({ params }: { params: Promise<{ token: string }> }) {
+  const { token } = await params;
+  const run = await prisma.wrappedRun.findUnique({ where: { shareToken: token } });
+
+  const [reg, med] = await Promise.all([
+    readFile(path.join(process.cwd(), "public/fonts/FiraMono-Regular.ttf")),
+    readFile(path.join(process.cwd(), "public/fonts/FiraMono-Medium.ttf")),
+  ]);
+
+  const data = run
+    ? {
+        noteCount: run.noteCount,
+        linkCount: run.linkCount,
+        tagCount: run.tagCount,
+        topTag: run.topTag,
+        archetype: run.archetype as Archetype | null,
+        score: run.score,
+        period: run.period as Period,
+      }
+    : { noteCount: 0, linkCount: 0, tagCount: 0, topTag: null, archetype: null, score: 0, period: "year" as Period };
+
+  return new ImageResponse(wrappedCard(data), {
+    ...size,
+    fonts: [
+      { name: "Fira Mono", data: reg, weight: 400, style: "normal" as const },
+      { name: "Fira Mono", data: med, weight: 500, style: "normal" as const },
+    ],
+  });
+}