Use the descriptor size to bound each allocation, with a one-byte EOF probe, and stop on observed growth. Retain short-read, cancellation, and final identity validation.
A 2,001-file benchmark requests 4,200,307 bytes instead of 266,469,376 with the same captured-byte digest. Flameox shows filesystem waits dominate, so this is an allocation reduction without a CPU speedup claim.
morluto