inventory.py counts the functions and call sites that take the whole file as &[u8]; range-trace (standalone crate, x86-64 Linux) records every load clawhdf5 makes from a file by mprotect + single-step, unchanged library code; libhdf5_reads.py counts libhdf5's reads through h5py's fileobj driver and prints a dataset's chunk extents. Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>