feat: 用 react-map-gl + MapLibre 替换 react-simple-maps 实现 2D 地图

- 替换 react-simple-maps/d3-geo/topojson-client 为 react-map-gl + maplibre-gl
- 使用 CARTO dark-matter 免费暗色瓦片，自带国家/城市名标注
- 基于 locale 动态切换地图标注语言（name:zh / name_en）
- MapLibre 原生 heatmap + circle 双层渲染替代 SVG 热力图
- 提取 MapPopup 组件，配合 react-map-gl Popup 实现点击弹窗
- continent page 改为 dynamic import (ssr: false)
- dev 模式去掉 Turbopack 以兼容 maplibre-gl
- 删除 heatmap-layer.tsx 和 react-simple-maps 类型声明

app/api/v1/claws/route.ts

@@ -10,6 +10,7 @@ export async function GET(req: NextRequest) {
     const limitParam = parseInt(searchParams.get("limit") ?? "50", 10);
     const limit = Math.min(Math.max(1, limitParam), 200);
     const region = searchParams.get("region");
+    const sort = searchParams.get("sort") ?? "activity";
 
     const conditions = [];
     if (region) {
@@ -22,7 +23,7 @@ export async function GET(req: NextRequest) {
       .select()
       .from(claws)
       .where(whereClause)
-      .orderBy(desc(claws.lastHeartbeat))
+      .orderBy(sort === "newest" ? desc(claws.createdAt) : desc(claws.lastHeartbeat))
       .limit(limit);
 
     const totalResult = await db
@@ -57,6 +58,7 @@ export async function GET(req: NextRequest) {
           city: claw.city,
           country: claw.country,
           isOnline: activeSet.has(claw.id),
+          createdAt: claw.createdAt,
           lastTask,
         };
       })