Add backend-generated sitemap with website manifest sync and nginx SEO proxy support.

Stores synced route config from /meshkee/sitemap-config.json, serves sitemap.xml and robots.txt per tenant, and invalidates cache on CMS writes.

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

src/business-settings/business-settings.util.ts

@@ -2,6 +2,9 @@ import { Prisma } from '@prisma/client';
 import {
   normalizeBusinessPrimaryColorId,
 } from './business-primary-colors';
+import {
+  normalizeWebsiteSitemapConfig,
+} from '../sitemap/sitemap-config.util';
 import {
   BUSINESS_MODULE_IDS,
   BusinessModuleId,
@@ -28,6 +31,7 @@ import {
   type SpecialProductsSource,
   OrderProcessStep,
   StubGatewaySettings,
+  WebsiteSitemapConfig,
   ZarinpalGatewaySettings,
 } from './business-settings.types';
 import {
@@ -412,6 +416,7 @@ export function normalizeBusinessSettings(raw: unknown): BusinessSettings {
         website.specialProductsSource,
         enabledModules,
       ),
+      sitemapConfig: normalizeWebsiteSitemapConfig(website.sitemapConfig),
     },
   };
 }
@@ -458,6 +463,10 @@ export function mergeBusinessSettings(
       specialProductsSource:
         patch.website?.specialProductsSource ??
         current.website.specialProductsSource,
+      sitemapConfig:
+        patch.website?.sitemapConfig !== undefined
+          ? patch.website.sitemapConfig
+          : current.website.sitemapConfig,
     },
   };
 }