Walks up from start looking for claims.yml, then falls back to the copy
shipped inside the installed package. The fallback is not a nicety: the
register is .Rbuildignored, so under R CMD check the source copy is not
there at all, and without this every test that reads it fails while
devtools::test() in the source tree passes. Same shape as the incident this
project exists to document – a green suite over a broken artefact.
Usage
find_claims(start = getwd())