The torchvision detector drop-in, headless pyrender/OpenGL shims, and the
detector+smoke tests existed only on ultra's disk inside gitignored .engine/.
Captured byte-identical copies into engine_patches/ (mirrors the HSMR subtree)
and moved setup_hsmr.sh to the repo root (tracked, path-relative) with a
--patch step that overlays them onto the clone.
Acceptance PASSED: fresh shallow clone of HSMR in a temp dir + './setup_hsmr.sh
--patch' + validated venv -> test_detector.py green (7/7 demo imgs, 15 patches),
no hand edits. A re-clone can no longer silently drop the ARM fixes.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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