"""Drives the AliroApplet's INS_DIAG_* profiling commands.

Each INS_DIAG_* operation runs a single primitive (HMAC-SHA-256, ECDH,
ECDSA-SHA-256 sign, or full AES-256-GCM encrypt of 137B) N times against
hardcoded test vectors on the card. We measure wall-clock latency for two
different N values; the per-op cost is the slope of the line, isolating
APDU framing overhead from the primitive's actual cost.
"""