fix(ci): use correct CLI command and run Node.js e2e tests on MRs

- Change `mon quickstart` to `mon local-install` (quickstart was
  renamed to local-install in the Node.js CLI)
- Add merge_request_event rule to cli:node:full:dind job to catch
  failures before merge to main

Author: claude

.gitlab-ci.yml

@@ -479,8 +479,8 @@ cli:node:full:dind:
       PGAI_TAG=$PGAI_TAG
       EOF
   script:
-    - echo "=== Testing quickstart (demo mode) ==="
-    - node ./cli/dist/bin/postgres-ai.js mon quickstart --demo
+    - echo "=== Testing local-install (demo mode) ==="
+    - node ./cli/dist/bin/postgres-ai.js mon local-install --demo
     - sleep 10
     - node ./cli/dist/bin/postgres-ai.js mon status
     - echo ""
@@ -500,6 +500,7 @@ cli:node:full:dind:
   after_script:
     - docker ps -a || true
   rules:
+    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
     - if: '$CI_COMMIT_BRANCH == "main" || $CI_COMMIT_BRANCH =~ /^feature\//'
   allow_failure: false