feat(admin): complete integration of auth, delivery, and system infrastructure modules

services/admin/systemConfigService.uts

@@ -0,0 +1,41 @@
+import { rpcOrNull, rpcOrValue } from '@/services/analytics/rpc.uts'
+
+/**
+ * 系统配置项模型
+ */
+export type SystemConfig = {
+  config_key : string
+  config_value : UTSJSONObject
+  description ?: string
+  updated_at ?: string
+}
+
+/**
+ * 获取指定键的系统配置
+ */
+export async function getSystemConfig(key : string) : Promise<UTSJSONObject | null> {
+  const res = await rpcOrNull('rpc_admin_system_config_get', {
+    p_key: key
+  } as UTSJSONObject)
+  
+  if (res == null) return null
+  return res as UTSJSONObject
+}
+
+/**
+ * 保存/更新系统配置
+ */
+export async function saveSystemConfig(key : string, value : UTSJSONObject, description : string | null = null) : Promise<boolean> {
+  const ok = await rpcOrValue('rpc_admin_system_config_save', {
+    p_key: key,
+    p_value: value,
+    p_description: description
+  } as any)
+  
+  return ok === true
+}
+
+/**
+ * 批量获取配置 (可选扩展)
+ * 逻辑：如果后续有需求，可以补齐 rpc_admin_system_config_batch_get
+ */