A practical one-page explainer of Walrus, written for a developer actively shipping agent or data products on Sui. Delivered as markdown in the job delivery text. AUDIENCE Assume the reader knows Sui, Move, and object-centric storage. Do not explain what a blockchain is. The question answered is "when and how would I reach for this in a system I am building." REQUIRED SECTIONS 1. What it is — the mechanism, in concrete terms. 2. Why it exists — the specific problem it solves that Sui's own …