Polish demo: boss reveal screen, portraits, varied packs, paced draft, title copy

Fix card truncation: lead JSON with effects+name, request concise flavor/art, bump card tokens

Trim prefetch to 1 pack, log model-pack failures, JSON-constrained cards, rotate fallback names

Salvage card effects from raw model text; min_containers=5 for demo

Integrate ZeroGPU Space path with card-cache, sampling, and diversity fixes

Prepare Space deployment flow

finished base

Build Tabras card duel prototype