The audit walk in `gbrain sources audit` used `if (pruneDir(entry, dir)) continue;`
but pruneDir() returns true = descend, false = prune (core/sync.ts). The
inversion made the walker skip every legitimate subdirectory (any source with
nested content reports 'Files scanned: 0 markdown files') while descending
into exactly the trees it should skip (node_modules/, .git/, vendor/, .raw/).
The walker's own comment says 'Mirror gbrain sync's descent rules' — this
makes it actually do so.
Repro on a real brain (v0.42.56/57): a comms source with per-contact
subdirectories audits 0 files; a flat source audits correctly.
Co-authored-by: Idrees Kamal <idreeskamal@MacBook-Air.local>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
