Four libs written in one pass rather than four sequential splits, which
is what stops the libs chaining - the entry gets one source block naming
all four and no lib sources a sibling.
steam_compatibility.sh is reverted and stays at 663. Its CACHE_MAP
associative array is declared and filled in what would be the ProtonDB
lib but read by main, so that lib fails SC2034 linted alone. Third file
deferred for the same reason: shared mutable state means the seam is not
there.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011w2Pj4Ek3ZNMQVYcFHgXDY
