Quiet Rooms to Fourthwall: The Complete Art-to-Merch Pipeline Architecture

The full Quiet Rooms-to-Fourthwall pipeline: (1) GPT-5.4 generates artwork, (2) Opus 4.8 provides design critique, (3) GPT-5.4 produces platform-native variants at multiple sizes with no-crop padding, (4) GPT-5.4 provides honest product blurbs, (5) Claude Fable 5 builds Fourthwall product pages, (6) curl-verification confirms availability. Six steps, two agents, one pipeline.