H-091 inherits the exact solver/deformation dependency chain shipped in this package.

Direct H-091 scientific dependencies:
- h084_sin_power_resolution_destruction_attack.py
- h086_exact_fractional_gr_reference_audit.py
- h088_signed_residual_finite_cell_attack.py
- h089_wall_to_wall_continuous_transit_control.py

Frozen scientific state:
- p = 0
- sqrt(current-cell convergence) * sin(theta)^3
- K = 8.6816265415871847e-05
- R^2 resolution normalization
- H-089 no-node wall-to-wall cadence: straight transit, one update per occupied FrostCell
- exact fractional-b GR external ruler only after GR-CLOSED path generation
- no neighboring/look-ahead cell input
- planetary/Jupiter holdouts sealed

H-091 adds no fitted parameter. Its only candidate change is the predeclared material phase at which the SAME current-cell opposing-face min-width convergence is measured.
