CLAUDE: Stage 5 — JNA textures_nonoverlap binding + Stage5 driver (executes; golden mismatch documented)

TpJna: tp_tex_selftest. Stage5: reports EXECUTED (Blackwell OK) + golden-match separately.
textures_nonoverlap executes correctly on 5060 Ti; diff_rgb_combo golden mismatch is a documented
known issue (not in the LWIR16 CUAS workflow). All kernels the CUAS workflow uses are validated.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>