Merge origin/beta into feature/cdc-connector

Resolves conflicts for PR #510 (base: beta):
- package.json: keep protospack ^3.40.0-beta.20 (carries CDC→Iceberg fields);
  package-lock.json reconciled (protospack was the only dep delta vs beta).
- connection-test controller/service/dto: keep BOTH feature sets — our CDC
  prerequisites validation AND beta's refresh-catalog endpoints.
- Adopt beta's cache-first catalog reads (connections-api proxy) over our gRPC
  path. connectionTestListTables now enriches each table with primary_keys
  derived from the cached columns endpoint (is_primary_key), preserving the
  CDC create flow's need for PKs under the new architecture; spec updated.
- docsfera.json resolved to ours; regenerated on next app bootstrap.

connection-test spec: 6 passed. tsc --noEmit: clean.

Co-Authored-By: WOZCODE <contact@withwoz.com>

.github/workflows/validate-k8s.yml

@@ -71,6 +71,11 @@ jobs:
           sudo mv helmfile /usr/local/bin/
           helmfile --version
 
+      - name: Install Helm Diff plugin
+        run: |
+          helm plugin install https://github.com/databus23/helm-diff --version v3.9.3
+          helm diff version
+
       - name: Debug Helm env
         run: |
           helm env
@@ -102,4 +107,5 @@ jobs:
       - name: Run Helmfile Diff
         env:
           ENV: ${{ needs.extract_environment.outputs.environment }}
+          HELM_PLUGINS: /home/runner/.local/share/helm/plugins
         run: helmfile -f deploy/helmfiles/${ENV}.yaml diff