feat: deployable design studio and updated component showcase

deploy/nginx-design-studio.conf

@@ -0,0 +1,14 @@
+# Include INSIDE the existing component site's nginx server block.
+# The existing location / continues to proxy the component app on its usual port.
+location = /design-studio {
+    return 308 /design-studio/;
+}
+location /design-studio/ {
+    # Preserve the path and the external Host so same-origin validation works.
+    proxy_pass http://127.0.0.1:4320;
+    proxy_set_header Host $http_host;
+    proxy_set_header X-Forwarded-Proto $scheme;
+    proxy_http_version 1.1;
+    proxy_read_timeout 60s;
+    client_max_body_size 2m;
+}