feat: 增强代理结算和账单管理功能

- 在多个控制器中引入 SettlementPartyEnrichment 服务，以优化代理结算和账单的处理逻辑。
- 更新 AgentSettlementBillIndexController 和 AgentSettlementBillShowController，支持根据账单 ID 和关键字进行查询。
- 在 AgentSettlementPeriodCloseController 中添加对站点管理权限的验证，确保只有具备相应权限的管理员能够关闭账期。
- 在 AgentSettlementPeriodIndexController 中更新账期数据的返回格式，提升数据的完整性和可用性。
- 引入对相对占成比例的支持，增强代理资料的管理能力，确保数据一致性。

tests/Feature/AdminAgentDelegationApiTest.php

@@ -84,16 +84,16 @@ test('parent agent can sync delegation grants for direct child', function (): vo
     ]);
     grantSuperAdminRole($super);
 
-    $parent = $service->createChild($super, [
+    $parent = $service->createChild($super, agentChildPayload([
         'parent_id' => $rootId,
         'code' => 'deleg-parent',
         'name' => 'Deleg Parent',
-    ]);
-    $child = $service->createChild($super, [
+    ]));
+    $child = $service->createChild($super, agentChildPayload([
         'parent_id' => $parent->id,
         'code' => 'deleg-child',
         'name' => 'Deleg Child',
-    ]);
+    ]));
 
     $parentAdmin = AdminUser::query()->create([
         'username' => 'deleg_parent_admin',
@@ -139,11 +139,11 @@ test('delegation ceiling blocks role permissions beyond child grants', function
     ]);
     grantSuperAdminRole($super);
 
-    $branch = $service->createChild($super, [
+    $branch = $service->createChild($super, agentChildPayload([
         'parent_id' => $rootId,
         'code' => 'ceil-branch',
         'name' => 'Ceil Branch',
-    ]);
+    ]));
 
     $viewActionId = (int) DB::table('admin_menu_actions')
         ->where('permission_code', 'agent.node.view')