Add TpInstance to the JNA shim: device buffers (gpu_geometry_correction,
gpu_rByRDist, gpu_rot_deriv, gpu_correction_vector) + setters (HtoD),
the two pure-geometry launches (calcReverseDistortionTable {16,1,1}/{3,3,3},
calc_rot_deriv {num_cams,1,1}/{3,3,3}), and readback getters. Driver-API
cuLaunchKernel against the NVRTC module (mirrors GpuQuad.execCalcReverseDistortions
/ execRotDerivs, no JCuda). build_lib.sh builds libtileproc.so.

Validated via Java->JNA against tile_processor_gpu/clt reference data on the
RTX 5060 Ti: rByRDist == clt/*.rbyrdist to ~1e-7 (aux 16-cam and main),
rot_deriv rows orthogonal to ~1e-10 (scaled-rotation structure, det~zoom^3).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

libtileproc shim (tp_jna.cpp: extern "C" tp_create_module/num_functions/last_error/destroy)
+ standalone tp_nvrtc_probe.cpp + build_probe.sh. NVRTC-compiles the kernels (+ JCUDA defines)
-> cuLink(libcudadevrt, CDP) -> module -> 19 functions, validated on the RTX 5060 Ti (sm_120 via
compute_90 PTX + driver JIT). Build artifacts gitignored. By the JCuda->JNA migration.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

tiles)