feat: AI 周末行程规划 — DeepSeek 智能排期 + 高德 POI + 多日翻页

- 接入 DeepSeek API，提交想法时自动 AI 打标（品类/时段/时长/搜索策略）
- 新增行程规划 API：智能选取想法 → 高德 POI 搜索 → AI 生成最优行程
- 支持多日计划（"整个周末"拆分周六/周日，并行 AI 调用）
- 行程展示逐日翻页，时间线可滚动，操作按钮固定底部
- 分享卡适配多日格式，支持图片保存与原生分享
- Prisma schema 新增 WeekendPlan 模型及 BlindBoxIdea AI 标签字段
- Jenkinsfile 集成 DEEPSEEK_API_KEY 环境变量

src/app/api/blindbox/room/[code]/route.ts

@@ -1,6 +1,6 @@
 import { NextResponse } from "next/server";
 import { prisma } from "@/lib/prisma";
-import { getRoomByCode } from "@/lib/blindbox";
+import { getRoomByCode, requireMembership } from "@/lib/blindbox";
 import { apiHandler, ApiError, requireUserId } from "@/lib/api";
 
 export const GET = apiHandler(async (_req, { params }) => {
@@ -14,6 +14,9 @@ export const GET = apiHandler(async (_req, { params }) => {
     code: room.code,
     name: room.name,
     creatorId: room.creatorId,
+    city: room.city,
+    lat: room.lat,
+    lng: room.lng,
     poolCount: room._count.ideas,
     members: room.members.map((m) => ({
       ...m.user,
@@ -22,6 +25,44 @@ export const GET = apiHandler(async (_req, { params }) => {
   });
 });
 
+export const PATCH = apiHandler(async (req, { params }) => {
+  const { code } = await params;
+  const { userId, city, lat, lng } = await req.json();
+
+  requireUserId(userId);
+
+  const room = await prisma.blindBoxRoom.findUnique({
+    where: { code: code.toUpperCase() },
+  });
+  if (!room) throw new ApiError("房间不存在", 404);
+
+  await requireMembership(room.id, userId);
+
+  const numLat = Number(lat);
+  const numLng = Number(lng);
+  if (
+    !Number.isFinite(numLat) || !Number.isFinite(numLng) ||
+    numLat < -90 || numLat > 90 || numLng < -180 || numLng > 180
+  ) {
+    throw new ApiError("位置坐标无效");
+  }
+
+  const updated = await prisma.blindBoxRoom.update({
+    where: { id: room.id },
+    data: {
+      city: typeof city === "string" ? city.trim() : null,
+      lat: numLat,
+      lng: numLng,
+    },
+  });
+
+  return NextResponse.json({
+    city: updated.city,
+    lat: updated.lat,
+    lng: updated.lng,
+  });
+});
+
 export const DELETE = apiHandler(async (req, { params }) => {
   const { code } = await params;
   const { userId } = await req.json();