feat(L03): add blinker and synchronous logic card

scripts/render_card_layouts.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env sh
+set -eu
+
+script_dir=$(CDPATH= cd "$(dirname "$0")" && pwd)
+repo_root=$(CDPATH= cd "$script_dir/.." && pwd)
+
+if [ -n "${CARD_LAYOUTS_ROOT:-}" ]; then
+  layouts_root=$CARD_LAYOUTS_ROOT
+else
+  layouts_root=$repo_root/../../../tools/card-layouts
+fi
+
+renderer=$layouts_root/tools/render_card.py
+if [ ! -f "$renderer" ]; then
+  echo "Nie znaleziono generatora card-layouts: $renderer" >&2
+  echo "Ustaw CARD_LAYOUTS_ROOT na checkout edu-tools/card-layouts." >&2
+  exit 1
+fi
+
+exec python3 "$renderer" "$repo_root" "$@"