The hub registers catalogs (hidden until a moderator approves them), hands out upload tokens, and records the
revisions catalogs register after validating uploads: numbered, never changed, signed by the hub (its own
Ed25519 key, published at /.well-known/t5de-keys.json). Creators edit product info (descriptions cleaned by an
allowlist) and can retract revisions. People get products into their library, optionally staying on a
revision; the proxy asks which revision to load and where. Contract in docs/products.md.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
