feat: 地址选择改走地区选择器接口

编辑地址用 page-container 抽屉 + regionPicker children/search，提交仍传省市区中文名。

request/api/regionPicker.js

@@ -0,0 +1,26 @@
+import { get } from './http'
+
+/**
+ * 省市区选择器（xk-api type=3）
+ * 取值：unwrapXkApi → code / result / message
+ * children/search 仅未软删；resolve 含软删以便回显
+ */
+
+/** 按 pid 拉一层子节点 xk-api GET /region-picker/children */
+export async function getRegionChildren(pid = 0) {
+	return await get('/region-picker/children', { pid }, 3)
+}
+
+/** 地名/首拼/全拼合一搜索 xk-api GET /region-picker/search */
+export async function searchRegions(keyword, limit = 30) {
+	return await get('/region-picker/search', { keyword, limit }, 3)
+}
+
+/** 按省+叶回显 xk-api GET /region-picker/resolve */
+export async function resolveRegionPair(provinceId, cityId) {
+	return await get(
+		'/region-picker/resolve',
+		{ province_id: provinceId, city_id: cityId },
+		3,
+	)
+}