Validate only rejected blob_size_limit below chunk_size, but the chunker
can emit chunks up to chunk_size times the FastCDC size spread (four
times), and the packer puts a single chunk of any size into an otherwise
empty blob. A limit between one and four times chunk_size therefore let a
blob reach four times the configured maximum, with most blobs holding a
single chunk and so exposing individual chunk lengths to anyone who can
list the destination.
Validate now rejects blob_size_limit below chunk_size times the spread,
reusing the chunker's one constant (now exported as ChunkSizeSpread)
instead of a second literal. The rule is stated in the error text, the
Validate comment, the README config table, config.example.yml, and the
generated config template.
Model: opus-4-8
sneak