PoseMeasureChain descriptor (tp_lma.h) = the rung-B3 per-scene pcyc_*
union + the resident buffer pointers the granular stage functions launch
with - the DP parent's marshalling, consumed verbatim. Geometry buffers
stay opaque (void*) so the header remains host-compilable; tp_lma.cu
casts at the launch sites (one NVRTC translation unit).

pose_measure_dp tail-enqueues the EXACT B3 host stage sequence:
task_update -> [slot0 rot-deriv + tile offsets + erase(NaN) + convert
SET] -> [slot1 rot-deriv + tile offsets + convert SUBTRACT] ->
consolidate -> inter-corr -> normalize -> peak. Payload kernels are the
UNMODIFIED production ones (most already single-thread CDP parents -
the pre-JNA top-DP pattern), so the chain is byte-identical BY
CONSTRUCTION; only the interior host syncs and the mid-chain 4-byte
count readbacks disappear. Mid-chain counts (MB pairs / surviving tiles
/ corr rows) are read by self-chaining launchers (the D1 pattern) that
run tail-enqueued BEHIND the counting kernel and check the LIVE count
against the descriptor's provisioned capacity (device count guards;
static over-provisioned shapes per the ratified D2 rule). New helper
kernels only move bytes: gather/scatter of the per-cam CLT slices and
the 0xFF NaN-poison fill (the host DtoD memcpys/memsets).

Wrapper tp_proc_exec_pose_measure_cycle_dp (B3-signature drop-in):
host keeps the rung-C2 nullable uploads (pose_task_upload split out of
exec_pose_task_update, same bytes), the per-sequence reverse-distortion
build, consolidate/peak capacity provisioning (no device-side malloc),
the B4 bayer fence, ONE parent launch, ONE end-of-chain 5-int status
D2H (rc/pairs/surviving/misaligned/corr rows). Peaks/corr indices stay
resident for the unchanged fetch calls.

Gate: test_pose_measure_dp_jna (cases.list 'measure_dp', rides the
captured pose_corr case for real images/kernels/geometry/center-TD;
task template txy/centers extracted from the captured production task
stream; camera pair synthetic per the B1/D1 two-instance rule). Three
poses, B3 entry vs DP chain, ORDER-INDEPENDENT KEYED BY PACKED INDEX:
counts/stats equal, index sets equal, raw-TD (256) + FZ-normalized PD
(225) + peak (8) rows ALL memcmp-equal (300 corr rows, 150/150 tiles).
run_cases.sh ALL PASS (pose_corr @tol 0, peak, peak_recenter, avg_td,
avg_td_oob, bayer_staged, dp_cycles, measure_dp); DP spike test still
PASS; compute-sanitizer 12.8 memcheck 0 errors.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>