fix: Add nginx proxy rules for CMS API routes

- Add studio-api-location.conf to redirect API routes to CMS service (port 3001)
- Routes /auth, /courses, /lessons, etc. now go to CMS instead of frontend
- Mount location config in nginx-proxy vhost.d directory

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

nginx/proxy.conf

@@ -3,3 +3,12 @@ map $http_x_forwarded_proto $origin_proto {
     default $http_x_forwarded_proto;
     ""      $scheme;
 }
+
+# Location for CMS API routes - redirect to CMS service (port 3001)
+location ~ ^/(auth|courses|modules|lessons|assets|organization|branding|users|admin|question-bank|test-templates|knowledge-base|api|webhooks|grading|libraries|rubrics|learning-sequences|audit-logs|analytics|webhooks|cohorts|announcements|submissions|peer-reviews|instructors|token-usage|sam|embeddings) {
+    proxy_pass http://openccb-cms:3001;
+    proxy_set_header Host $host;
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header X-Forwarded-Proto $scheme;
+}