Spacetime OJAI-COMP-001 reproduction bundle

Node.js 24.19.0 used; JavaScript pipeline has no installed dependencies.
From this extracted directory:
  node scripts/benchmarks/run.mjs --output /tmp/spacetime-ojai-repro

Optional source extraction and representation-fidelity experiment:
  python scripts/benchmarks/extract_dataset.py --output /tmp/ojai-source
  python scripts/benchmarks/benchmark_terrain.py --output /tmp/ojai-fidelity
Tested with Python3.12.14,NumPy2.3.5,Pillow12.3.0.

Read docs/benchmarks/OJAI-COMP-001.md for scope and timing boundaries.
All measurements use retained real terrain; fault inputs are deliberately
altered. This does not establish absolute accuracy or navigation integrity.
Timings vary by host. The pack digest must reproduce exactly.

USGS3DEP and USDA NAIP: public domain. Credit USGS, USDA, The National Map.
Caltrans SHN: CC Attribution; source, modification notice and attribution
are retained in routes.json.
