tp_proc_render_cameras mirrors pose_task_upload's ref/scene groups into
render-PRIVATE buffers: the pose loop rewrites gpu_pose_cameras/radial/rbr/ers
for scene N+1 before render(N) executes on its stream - sharing them was a
use-after-rewrite race. render_dp descriptor now points at the private block;
render_scene(use_task_update=1) requires both groups uploaded.
render_template/_set_tasks accept task counts <= full frame (the
renderSceneVirtual 'all tiles with valid disparity' convention).
run_cases ALL PASS; render_pipe bit-exact unchanged. .so rebuilt in place.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>