Add published user products to the storefront sitemap.

Expose /sitemap-user-products.xml when customer_products is enabled, invalidate on listing mutations, and proxy the new path from nginx provision scripts.

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

docs/website-api/AI_PROMPT.md

@@ -152,9 +152,10 @@ Minimal example:
 - **Canonical detail URLs (Meshkee default for all sites):**
   - Product: `/products/{id}/{nameFaSlug}` — build `nameFaSlug` from `nameFa` (fallback `title`); resolve page via `GET /tenants/{domain}/products/by-id/{id}` (slug segment is SEO-only; redirect to canonical if it drifts).
   - Product category: `/products/category/{categoryId}/{nameFaSlug}` — build slug from `nameFa` (fallback `name`); resolve via `GET /tenants/{domain}/categories/by-id/{id}`, then list products with `categoryId`.
+  - User product (customer listing): `/user-products/{slug}` — use the listing’s `slug` from the API; resolve via `GET /tenants/{domain}/user-products/{slug}`.
   - Blog: `/blog/{id}/{titleSlug}` — `GET /tenants/{domain}/blogs/by-id/{id}`
   - Portfolio: `/portfolios/{id}/{titleFaSlug}` — `GET /tenants/{domain}/portfolios/by-id/{id}`
-- When linking from lists/cards, use the same `{id}/{slug}` shape for details (slugify Farsi title: spaces → `-`, keep Persian letters). Category links use `/products/category/{id}/{nameFaSlug}`.
+- When linking from lists/cards, use the same `{id}/{slug}` shape for details (slugify Farsi title: spaces → `-`, keep Persian letters). Category links use `/products/category/{id}/{nameFaSlug}`. User-product cards use `/user-products/{slug}`.
 - Omit `templates` in `sitemap-config.json` unless this site uses non-default paths.
 - **Sitemap files (proxied by nginx — do not ship local copies):**
   - `/sitemap.xml` — sitemap **index** (lists child sitemaps for enabled modules)
@@ -165,6 +166,7 @@ Minimal example:
   - `/sitemap-videos.xml` — published videos (when videos module is enabled)
   - `/sitemap-instructions.xml` — published instructions (when instructions module is enabled)
   - `/sitemap-workshops.xml` — published workshops (when workshops module is enabled)
+  - `/sitemap-user-products.xml` — published user products / customer listings (when `customer_products` module is enabled)
   - `/robots.txt` — points at `/sitemap.xml`
 
 ### On-page SEO (every public page)