Add demo video and sponsor publication links

Remove unavailable article PDF link

Publish demo walkthrough links in article

Add detailed project paper and demo video script

docs: DoodleDreams implementation plan

Add full article + README links section with all sponsor/model URLs

Detailed judge-facing README with honest badge claims + corrected Field Notes blog

Fix ZeroGPU build: real FLUX+VoxCPM, 3-model cleanup, remove Tiny Mode (#1)

DoodleBook: ZeroGPU app with parallel TTS, heartbeat, queue