Expose portfolio projectUrl and document it for websites.

Wire create/update/list/detail to project_url and sync website OpenAPI, Postman, and AI brief.

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

docs/website-api/Meshkee-Website-API.postman_collection.json

@@ -906,6 +906,7 @@
           ],
           "request": {
             "method": "GET",
+            "description": "Published portfolios (newest / highest sortOrder first). Items include nullable `projectUrl` (external website link).",
             "url": {
               "raw": "{{baseUrl}}/tenants/{{domain}}/portfolios?page=1&pageSize=12",
               "host": [
@@ -948,9 +949,18 @@
           "name": "Get published portfolio by slug (website)",
           "request": {
             "method": "GET",
+            "description": "Portfolio detail. Includes nullable `projectUrl` (external website link).",
             "url": "{{baseUrl}}/tenants/{{domain}}/portfolios/{{portfolioSlug}}"
           }
         },
+        {
+          "name": "Get published portfolio by id (website)",
+          "request": {
+            "method": "GET",
+            "description": "Preferred for /portfolios/{id}/{titleFaSlug} pages. Includes nullable `projectUrl`.",
+            "url": "{{baseUrl}}/tenants/{{domain}}/portfolios/by-id/{{portfolioId}}"
+          }
+        },
         {
           "name": "List portfolio comments (website)",
           "request": {