CONSTRAINED METRIC CANDIDATE: CASSINI AND MERCURY

Conditional compatibility of an assumed effective action. No tracking-data
fit, quantum derivation or global stability claim. Read the two study notes.

Use Python 3.12 and install requirements.txt in your own environment.
A Rust compiler supporting edition 2024 must be on PATH.
From this extracted directory, run:
  python -B -W error reproduce_cmc.py
  python -B -W error reproduce_cmc.py --full

Both modes verify supplied checksums before changing outputs. Quick mode
runs action/response/metric checks, nonlinear variations, five 3D grids,
and one solar pilot. Full mode also repeats 17 solar fields, all controls
and integral extractions. Runtime depends on the machine.
Expected results are retained in expected/. No binaries or spacecraft
tracking data are included. Original galaxy-scale selection and the
previous 49-cubed field are frozen inputs, not silently refitted.

The imported legacy helpers contain other main workflows that require
the larger project; run the two documented commands for this package.
References: CASSINI_MERCURY_CONSTRAINED.md and CMC_METRIC_DERIVATION.md.
