Merge branch 'fix/ui-404-on-instance-refresh' into 'master'

Fix UI 404 on page refresh at /instance

Closes #693

See merge request postgres-ai/database-lab!1120

Author: agneum

ui/packages/ce/nginx.conf

@@ -22,7 +22,9 @@ server {
     }
 
     # API endpoints proxied directly to the DLE server.
-    location ~ ^/(healthz|status|instance|branch|branches|clone|clones|snapshot|snapshots|observation|admin|full-refresh)(/|$) {
+    # "instance" is intentionally excluded — it collides with the SPA route /instance.
+    # The /instance/retrieval and /instance/logs endpoints are reachable via /api/ and /ws/.
+    location ~ ^/(healthz|status|branch|branches|clone|clones|snapshot|snapshots|observation|admin|full-refresh)(/|$) {
         resolver 127.0.0.11;
         proxy_http_version 1.1;
         proxy_pass http://${DLE_HOST}:${DLE_PORT}$request_uri;