Split product sitemap and use Farsi category URLs with ids.

sitemap.xml is now an index of main + products; category loc paths use /products/category/{id}/{nameFaSlug} with a public by-id lookup for storefronts.

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

docs/PROJECT_CONTEXT.md

@@ -262,9 +262,12 @@ All routes are prefixed with `/api/v1`.
 | POST | `/auth/verify-otp` | Verify OTP (marks cell verified; no tokens) |
 | POST | `/auth/handoff/consume` | One-time SSO ticket → tokens (customer → business dashboard) |
 | GET | `/tenants/:host` | Resolve business from domain (`specialProductsSource`, `enabledModules`, `homeCharts`, `ePayment`) |
-| GET | `/tenants/:host/sitemap.xml` | XML sitemap (static + categories `/products/category/{slug}` + `/products|blog|portfolios/{id}/{faSlug}`) |
+| GET | `/tenants/:host/sitemap.xml` | Sitemap **index** → main + products child sitemaps |
+| GET | `/tenants/:host/sitemap-main.xml` | Static pages + `/products/category/{id}/{faSlug}` + blogs/portfolios |
+| GET | `/tenants/:host/sitemap-products.xml` | Published products `/products/{id}/{faSlug}` |
 | GET | `/tenants/:host/robots.txt` | robots.txt pointing to apex `/sitemap.xml` |
-| GET | `/tenants/:host/categories/by-slug/:slug` | Public category by slug (`?entityType=product` default) |
+| GET | `/tenants/:host/categories/by-id/:categoryId` | Public category by id (for category landing pages) |
+| GET | `/tenants/:host/categories/by-slug/:slug` | Public category by CMS slug |
 | GET | `/tenants/:host/products/by-id/:productId` | Public product detail by id (for `{id}/{nameFaSlug}` storefront routes) |
 | GET | `/tenants/:host/blogs/by-id/:blogId` | Public blog by id |
 | GET | `/tenants/:host/portfolios/by-id/:portfolioId` | Public portfolio by id |