coverage_retrieval(
  target      = "portfolio corpus",
  query       = "Rust experience",
  corpus_size = 1003,
  retrieved   = 6,
  in_context  = 6,
  claim_type  = "absence",
)

→ scope:      6 of 1003 corpus units (0.598%)
  exhaustive: false
  claim_supported: false

  REFUSE_THIS_CLAIM: An ABSENCE claim asserts something about every unit
  you did NOT read, and 997 were never read. Downgrade the answer to what
  you found, or inspect the whole corpus.