fix(deploy): validate compose without workstation secrets

docker compose config required real values for gitignored .env files and secrets, so validate always failed on stacks with :? guards (netbird, netbox). Validate structure only via --no-interpolate, --no-env-resolution and --no-path-resolution, keeping normalization and consistency checks.

.gitea/workflows/deploy-lib.sh

@@ -89,10 +89,27 @@ stage_validate() {
   cd "$REPO"
   select_manifests
   local m k cf
+  # Compose .env files and secret files are gitignored by design, so the
+  # workstation never has real values for them. Validate structure only:
+  # skip interpolation, env-file resolution, and path resolution so that
+  # required-variable guards (:?) and missing local files don't fail CI.
+  # Normalization and consistency checks stay enabled.
+  local compose_validate_flags=()
+  local compose_config_help
+  compose_config_help="$(docker compose config --help 2>/dev/null || true)"
+  if printf '%s' "$compose_config_help" | grep -q -- '--no-interpolate'; then
+    compose_validate_flags+=(--no-interpolate)
+  fi
+  if printf '%s' "$compose_config_help" | grep -q -- '--no-env-resolution'; then
+    compose_validate_flags+=(--no-env-resolution)
+  fi
+  if printf '%s' "$compose_config_help" | grep -q -- '--no-path-resolution'; then
+    compose_validate_flags+=(--no-path-resolution)
+  fi
   log "Validate compose stacks"
   for cf in ${COMPOSE_STACKS[@]+"${COMPOSE_STACKS[@]}"}; do
     echo "  config: $cf"
-    docker compose -f "$cf" config --quiet
+    docker compose -f "$cf" config --quiet "${compose_validate_flags[@]}"
   done
   log "Validate k8s manifests (kubectl dry-run=client)"
   for m in ${K8S_MANIFESTS[@]+"${K8S_MANIFESTS[@]}"}; do