Initial shared Copilot resources scaffold

install/update.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+script_dir="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd -P)"
+repo_root="$(cd -- "$script_dir/.." && pwd -P)"
+
+main() {
+  if [[ -d "$repo_root/.git" ]]; then
+    git -C "$repo_root" pull --ff-only
+  else
+    printf 'Skipping git pull because this repository is not initialized as a git repository yet.\n'
+  fi
+
+  "$script_dir/verify.sh" --quick
+}
+
+main "$@"