refactor(P0): JWT 认证、并发安全、错误日志三项安全加固

- 新增 JWT httpOnly cookie 认证链路 (jose)，登录/注册签发 token，
  所有用户和盲盒 API 改为从 cookie 提取 userId，不再信任客户端传值
- 新增 /api/auth/logout 端点清除认证 cookie
- GET /api/user 区分 owner/非 owner，非 owner 不暴露 email
- atomicUpdateRoom 新增 per-room 应用层互斥锁，防止 SQLite 下并发 lost update
- 修复 getRoomData 中 fire-and-forget delete 改为 await
- 37 个静默 catch 块跨 17 个文件添加 console.error 日志
- 新增 REFACTOR_PLAN.md 全景分析文档

src/app/api/blindbox/rooms/route.ts

@@ -1,9 +1,10 @@
 import { NextResponse } from "next/server";
 import { prisma } from "@/lib/prisma";
-import { apiHandler, requireUserId } from "@/lib/api";
+import { apiHandler } from "@/lib/api";
+import { getAuthUserId } from "@/lib/auth";
 
 export const GET = apiHandler(async (req) => {
-  const userId = requireUserId(req.nextUrl.searchParams.get("userId"));
+  const userId = await getAuthUserId(req);
 
   const memberships = await prisma.blindBoxMember.findMany({
     where: { userId },