Embed the transparent logo at the top of README.md so it shows on the HACS
repository page (render_readme). Generate icon/logo PNGs at 256 and 512 for
a home-assistant/brands pull request at custom_integrations/nestquest/,
with an offline, deterministic generator and a note on how they are used.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>