fix: 补齐 MaDao 直连动态选项

恢复 MaDao 直连模式的服务商、国家、线路下拉，并通过 daemon providers/countries/operators 接口级联加载。保存 madaoOperator 并在 direct acquire 中通过 metadata.operator 下发，routing 模式保留已保存的直连配置。

phone-sms/providers/madao.js

@@ -255,6 +255,7 @@
       service: normalizeText(options?.service || state?.madaoServiceName, DEFAULT_SERVICE),
     };
     const country = normalizeCountry(options?.country || state?.madaoCountry);
+    const operator = normalizeProviderId(options?.operator || state?.madaoOperator);
     const minPrice = normalizePrice(options?.minPrice ?? state?.madaoMinPrice);
     const maxPrice = normalizePrice(options?.maxPrice ?? state?.madaoMaxPrice);
 
@@ -268,6 +269,9 @@
     if (country) {
       request.country = country;
     }
+    if (operator) {
+      request.metadata = { operator };
+    }
     if (minPrice !== null) {
       request.min_price = minPrice;
     }