Register chat_web_app for node-static deploy (chat_web_app#13 Part B).

Add app_catalog entry, host_apps on adama/roslin/ai-server-4080 (prod :8082),
and document ports/NPM backends for the CRA static frontend.

inventory/group_vars/all.yml

@@ -87,6 +87,15 @@ app_catalog:
     compose_file: docker-compose.prod.yml
     web_service: web
     migrate_cmd: "uv run python manage.py migrate --noinput"
+  chat_web_app:
+    type: node-static
+    repo: "{{ git_base_url }}/ai_ml_operations/chat_web_app.git"
+    default_branch: master
+    # package.json lives in this subdir of the checkout (npm runs here).
+    subdir: llm-fe
+    # Document root served by nginx and written by `npm run build:<env>`.
+    # {env} is replaced with the entry's env (beta/prod).
+    webroot_pattern: "/var/www/{env}.chat.aimloperations/html"
 
 # Deploy filter vars. CI passes these; manual runs may leave them undefined
 # to (re)deploy every app listed in the host's host_apps.