Add umbrella validation entry point

scripts/validate-v1.sh

@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+
+run_step() {
+  local title="$1"
+  shift
+
+  echo
+  echo ">>> ${title}"
+  "$@"
+}
+
+ensure_node_modules() {
+  local dir="$1"
+
+  if [[ ! -d "$ROOT_DIR/$dir/node_modules" ]]; then
+    echo "Missing dependencies in $dir (node_modules not found)."
+    echo "Run: (cd '$ROOT_DIR/$dir' && npm install)"
+    return 1
+  fi
+}
+
+run_npm_script() {
+  local dir="$1"
+  local script="$2"
+
+  ensure_node_modules "$dir"
+  run_step "${dir}: npm run ${script}" bash -lc "cd '$ROOT_DIR/$dir' && npm run ${script}"
+}
+
+run_npm_script "Yonexus.Protocol" test
+run_npm_script "Yonexus.Server" check
+run_npm_script "Yonexus.Server" test
+run_npm_script "Yonexus.Client" check
+run_npm_script "Yonexus.Client" test
+
+echo
+printf 'Yonexus v1 validation passed.\n'