feat(payment): 虎皮椒聚合支付 - 官方插件与跨平台可执行文件

新增 xunhupay 官方包，支付 RPC 与宿主只保留订单和验签边界；官方支付包同时带上各系统 provider，避免把 Linux ELF 当成本机入口。

Co-authored-by: Cursor <cursoragent@cursor.com>

.github/workflows/quality.yml

@@ -35,7 +35,7 @@ jobs:
       - name: Verify canonical payment packages
         env:
           PAYMENT_PLUGIN_SMOKE_TEST: "1"
-        run: sh plugin-packages/verify-payment-packages.sh linux amd64
+        run: sh plugin-packages/verify-payment-packages.sh --all linux amd64
       - uses: docker/setup-qemu-action@v3
       - uses: docker/setup-buildx-action@v3
       - name: Build and execute payment packages for every image platform