LQ8 LOCAL EFFECTIVE EXTENSION AND 3D BENCHMARK
Exploratory coefficients chosen after seeing Cassini and Gaia, 5 Sep 2026.
This is not a derived nonlocal quantum or relativistic model.

Use Python 3.12 and a Rust compiler supporting edition 2024.
Install requirements.txt in your own environment, then:

python verify_inputs.py
python -B -W error dark_transition_tweak.py --amplitude -0.45 --position 4.25 --nr 192 --external 2.32e-10
python -B -W error dark_transition_finish.py 3d --amplitude -0.45 --position 4.25

The first command fits the spherical RAR scale and solves the axisymmetric
3D solar equation. Expected Q2 at 192x144: -4.256362225e-28 s^-2.
The second solves a nonsymmetric periodic density contrast on four Cartesian
grids. It does not simulate an isolated Sun or an observed disk galaxy.
Stored acceleration is minus the potential_gradient, in units of g_dark.
Expected galaxy RMS: 0.1471762864 dex. Parameters A=-0.45, T=4.25.
Expected final 3D residual below 2e-9; last restricted force change <0.2%.
Compare floating-point tolerances, not byte-identical regenerated records.

The larger historical scans are not regenerated by these two commands.
The refine/neighborhood workflows reference prior reports in the full project;
use the individual solar command with other grid/boundary choices instead.

References and data provenance:
Cassini: https://arxiv.org/abs/2602.17884v2
Gaia acceleration: https://arxiv.org/abs/2012.02036
RAR data: https://astroweb.case.edu/SPARC/ (header and checksum retained).
Source: https://emergent-gravity.com/research/
