{
  "path": "genesis/solvers/bem3d_kernels.py",
  "find": "EPS_0 = 8.854187817e-12",
  "replace": "EPS_0 = 8.943e-12",
  "why": "Raises the vacuum permittivity the 3-D solver assembles with by 1.0%, while the exact references in genesis/physics/exact_reference_3d.py keep 8.854187817e-12. Every solved capacitance is then 1% high, so 'validated against exact references before use' is false. Measured 2026-09-17: the witness exits 1 with FAIL|| R1_sphere_exact_1e6; R2_two_sphere_kelvin_moderate_1e6; R4_long_via_to_2d_slope_5e3_and_canonical_decomposition; ladder_witness_intact_and_fastcap_reproduces_fresh; faultA_dropped_m_modes_blows_near_touch. R3 stays green because its analytic coax reference uses the same constant."
}