Binds the D3-validated tp_proc_exec_pose_scene_dp in TpJna/GpuQuadJna
(+ base GpuQuad stubs, non-throwing negative return = the FAIL-safe
hook) and adds the one-entry-per-scene branch to the lean pose path:

- new saved curt.pose_scene_dp (default ON, 'Pose scene as ONE GPU DP
  entry'): eligibility = frozen lean shape only (fixed cycles, 1-inner
  cap, freeze 0, 3-angle lma_use_R, uniform MB, JNA backend, no armed
  capture, no debug-save holders); everything else falls back to the
  host-driven (B3) loop automatically.
- scene 0 (per template/sequence) always runs the host-driven loop -
  it seeds the resident per-sequence state through the production
  C1/C2 register path - then is REPLAYED through the DP entry as the
  one-shot oracle: per-cycle packed rows vs the captured resident-step
  results, the final anchor vs the fitted angles, and the last-cycle
  peak rows keyed by packed index (the B3 order-independence rule),
  all bit-compared. PASS arms DP from scene 1; FAIL (or any mid-run
  native failure) disables DP for the run and prints why.
- DP scenes reconstruct the scene bookkeeping from the returned trace
  by the exact leanFitScene/IntersceneLma double rules (candidate =
  packed[16..18] widened, dATR in double, RMS = packed[19..22],
  rejected step == the legacy runLma -1 -> coast), fetch/unpack the
  resident last-cycle peaks exactly like leanMeasure, and print the
  same QC/cycles/Done-line fields - the real-scene gate is 497 Done
  lines byte-identical to the 07/16 22:52 saves-OFF record.
- gpuTaskBuild steps 1-5 extracted verbatim into poseMeasureSetup()
  (shared with the DP entry); new 'scene DP entry' profile stage;
  Stage0 kernel count synced 36 -> 40 (the native-only D1-D3 sessions
  added the DP kernels but could not touch the Java constant).

Gates: mvn clean package PASS; Stage0 PASS 40/40; native run_cases.sh
ALL PASS (pose_corr @tol 0 + dp_cycles + measure_dp + scene_dp).
Real-scene gate = Andrey's next routine run: expect the D4 oracle PASS
line after scene 0, 'DP scene entry active' from scene 1, poses/QC
byte-identical, post ~19.5 -> ~8-10 ms/scene.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>