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.

postgres/initdb/01-create-databases.sh

@@ -5,12 +5,12 @@ set -euo pipefail
 : "${GITEA_DB_PASSWORD:?GITEA_DB_PASSWORD is required}"
 : "${NETRONOME_DB_PASSWORD:?NETRONOME_DB_PASSWORD is required}"
 : "${PENPOT_DB_PASSWORD:?PENPOT_DB_PASSWORD is required}"
+: "${STATUSPAGE_DB_PASSWORD:?STATUSPAGE_DB_PASSWORD is required}"
 
 create_role_and_database() {
   local role="$1"
   local database="$2"
   local password="$3"
-
   psql --username "$POSTGRES_USER" --dbname postgres \
     -v role="$role" -v database="$database" -v password="$password" \
     <<'SQL'
@@ -25,3 +25,4 @@ create_role_and_database authentik authentik "$AUTHENTIK_DB_PASSWORD"
 create_role_and_database gitea gitea "$GITEA_DB_PASSWORD"
 create_role_and_database netronome netronome "$NETRONOME_DB_PASSWORD"
 create_role_and_database penpot penpot "$PENPOT_DB_PASSWORD"
+create_role_and_database statuspage statuspage "$STATUSPAGE_DB_PASSWORD"