chore(deploy): rework k8s pipeline, monitoring and postgres 17

Deploy workflow uses git-tracked manifests, DISABLED flag and kustomize overlays; add webinar-checker metrics with ServiceMonitor and alerts; upgrade shared postgres to 17 with statuspage DB and probes/resources.

.gitea/workflows/ci.yaml

@@ -347,23 +347,3 @@ jobs:
                 ;;
             esac
           done
-
-  deploy-userbot-panel:
-    needs: build
-    if: github.ref_name == 'main' && contains(needs.build.outputs.services, 'userbot')
-    runs-on: [self-hosted, linux, arch, homelab, prod]
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4
-
-      - name: Apply and roll out userbot panel
-        shell: bash
-        run: |
-          kubectl apply -f userbot/k8s/base/panel.yaml
-          kubectl get secret userbot-common-secrets -n default -o json \
-            | jq 'del(.metadata.annotations,.metadata.creationTimestamp,.metadata.resourceVersion,.metadata.uid,.metadata.managedFields) | .metadata.namespace = "userbot"' \
-            | kubectl apply -f -
-          # Keep legacy deployments (forust/anna) in sync with manifests; they have no replicas field, so apply leaves scaling to the user manager only.
-          kubectl apply -f userbot/k8s/base/userbots.yaml
-          kubectl rollout restart deployment/userbot-panel -n userbot
-          kubectl rollout status deployment/userbot-panel -n userbot --timeout=180s