0afb55216b
- adaptive: skip layers with zero quadtree leaves in the connectivity restriction and mesh-boundary loops (IndexError on boards where a selected layer has no copper) - board_io: accept ZT_TEARDROP zones as conducting copper (KiCad types teardrop fills ZT_TEARDROP, never ZT_COPPER, so they were dropped) - geometry: copper_bbox uses the exact stroke bbox (centerline extrema + half width) instead of a 100 um chord tessellation that could undershoot arc/cap extrema past the raster guard margin - solver/adaptive: reference |J| to the conduction-equivalent thickness sigma*rho in every branch (the uniform branch used geometric t, so AC plots changed scale ~rs_ratio depending on unrelated per-cell maps) - solver/adaptive/raster: chain cells no longer show phantom sheet-face currents; store dl per chain link and overlay the true 1D density |dV|/(rho*dl) (exact at any frequency: AC scaling of link conductance and cross-section cancels) - test_quadtree: compare edge lists pair-for-pair (the independent column sort destroyed endpoint association)