Endpoints
GET/v/{version}/Full decoder (codebook)
GET/v/{version}/hash.jsonHash + metadata
GET/v/{version}/slot/{n}.mdSingle slot schema
GET/catalog.jsonAll versions + hashes
The decoder is public. The payload is private. Anyone can read the schema.
Nobody can reconstruct the brain state from it. The compressed cognition is opaque
without the encoded payload — but with the decoder, any AI instance anywhere
can decompress it.