migrate to the new tiered structure

example/.safeclaude/hooks/15-node.sh.example

@@ -0,0 +1,15 @@
+#!/bin/bash
+# OPTIONAL — only needed if your project pins a Node version via .nvmrc (the base
+# already includes a working Node). Rename to 15-node.sh to turn it on.
+set -euo pipefail
+
+if [ ! -s "$NVM_DIR/nvm.sh" ]; then
+  echo "[node] installing nvm..."
+  curl -fsSL https://raw.githubusercontent.com/nvm-sh/nvm/HEAD/install.sh \
+    | NVM_DIR="$NVM_DIR" PROFILE=/dev/null bash
+fi
+. "$NVM_DIR/nvm.sh"
+
+if [ -f /code/.nvmrc ]; then
+  ( cd /code && nvm install && nvm use )
+fi