Fixed corpus, fixed request count, one process, no daemon handshake and no
reindex or crash-recovery phases, so two runs differ only where the code does.
Requests go through a request/response driver rather than a batched pipe:
closing stdin makes the server treat it as a client disconnect and shut down
before answering, which yields a census of a process that never worked.
Linux gains a measurement-only --wrap shim so the profiler can observe
allocations the way the Windows interposer already does; macOS has no --wrap
and stays census-only, which the driver reports rather than passing off as
zero.
Signed-off-by: Martin Vogel <martin.vogel.tech@gmail.com>