Prompt 16 — Relativity and spacetime intelligence builder

Inputs

TARGET_PARTITION: {{TARGET_PARTITION}}
SOURCE_PROBLEMS_MODELS_OR_DATA: {{SOURCE_PROBLEMS_MODELS_OR_DATA}}
GEOMETRY_AND_CONVENTIONS: {{GEOMETRY_AND_CONVENTIONS_JSON}}
QUANTITY_REGISTRY: {{QUANTITY_REGISTRY_JSON}}
FORMAL_OR_NUMERICAL_RECEIPTS: {{FORMAL_OR_NUMERICAL_RECEIPTS_JSON}}

Task

Build objects for inertial transformations, spacetime geometry, relativistic dynamics, gravitation, fields on spacetime, and observational tests as supported by the input.

Mandatory conventions:

• metric signature, coordinate chart, units, constant conventions, index ordering, curvature sign, orientation, and basis;
• observer, frame, event, interval, proper time, four-vector, tensor, and invariant semantics;
• domain and regularity of coordinate systems;
• local versus global claims;
• weak-field, low-speed, geometric-optics, test-particle, symmetry, or perturbative approximations;
• coordinate singularities versus physical singularities;
• initial and boundary data for evolution problems;
• invariant scalar, tensor-symmetry, conservation, limiting-case, and coordinate-independence checks;
• empirical evidence and parameter inference separately from formal derivations.

Do not treat a coordinate-dependent expression as a physical observable without justification. Do not label a tensor calculation physically validated solely because its algebra is correct.

Return a physics-library-batch object.