feat(tenancy): add tenant navigation overrides

webui/src/api/tenancy.ts

@@ -1,6 +1,7 @@
 import type {
   ApiSettings,
   DeltaDeletedItem,
+  NavigationPreferences,
   PrivacyRetentionPolicy,
   TenantAdminItem
 } from "@govoplan/core-webui";
@@ -41,6 +42,7 @@ export type TenantSettingsItem = {
   available_languages: LanguagePackage[];
   system_enabled_language_codes: string[];
   enabled_language_codes: string[];
+  navigation?: NavigationPreferences | null;
   settings: Record<string, unknown>;
 };
 
@@ -51,6 +53,7 @@ export type TenantSettingsDeltaSections = Partial<{
     TenantSettingsItem,
     "available_languages" | "system_enabled_language_codes" | "enabled_language_codes"
   >;
+  navigation: TenantSettingsItem["navigation"];
   settings: TenantSettingsItem["settings"];
 }>;
 
@@ -147,6 +150,7 @@ export function updateTenantSettings(
   payload: {
     default_locale: string;
     enabled_language_codes?: string[] | null;
+    navigation?: NavigationPreferences | null;
   }
 ): Promise<TenantSettingsItem> {
   return apiFetch(settings, "/api/v1/admin/tenant/settings", {