fix(get-user): apply shared khanegi nav sample to all tenants

Keep bottom menu at 4 slots so outdated per-tenant JSON cannot overflow the bar.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/get-user/get-user.service.ts

@@ -1,6 +1,7 @@
 import { Injectable, NotFoundException } from '@nestjs/common';
 import { iranDaysUntil } from '../common/iran-time.util';
 import { PrismaService } from '../prisma/prisma.service';
+import { applyKhanegiNavSample } from './khanegi-nav-sample';
 
 type UiSetting = { key: string; value: string };
 
@@ -318,10 +319,13 @@ export class GetUserService {
     }
 
     const navigation = app.navigation;
-    if (!navigation || typeof navigation !== 'object') return;
-
-    if (navigation.type === 'sidebar+bottom') navigation.type = 'both';
+    if (!navigation || typeof navigation !== 'object') {
+      app.navigation = { type: 'both' };
+    } else if (navigation.type === 'sidebar+bottom') {
+      navigation.type = 'both';
+    }
 
+    const nav = app.navigation;
     const mapItems = (items: unknown) => {
       if (!Array.isArray(items)) return items;
       return items.map((item) => {
@@ -331,11 +335,12 @@ export class GetUserService {
       });
     };
 
-    navigation.sidebar = mapItems(navigation.sidebar);
-    navigation.bottom = mapItems(navigation.bottom);
-    if (navigation.sidebarReferral?.route === 'products') {
-      navigation.sidebarReferral.route = 'buyProduct';
+    nav.sidebar = mapItems(nav.sidebar);
+    nav.bottom = mapItems(nav.bottom);
+    if (nav.sidebarReferral?.route === 'products') {
+      nav.sidebarReferral.route = 'buyProduct';
     }
+    applyKhanegiNavSample(nav);
   }
 
   private buildHamkarUiSettings(ui: Record<string, any>): UiSetting[] {