Adds the printed materials shipped with each device:
- retailer-setup-guide.docx — non-technical 1-2 page setup guide
- retailer-setup-guide.py — generator script for the .docx
- doorcounter-repo-qr.png — QR code linking to the public Gitea repo
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
