dkx --plot renders publication panels from DKX or Fortran SFINCS output, and
dkx wout_*.nc solves a representative set first, at a resolution taken from a
measured convergence scan.

The large tier-2 decks complete: the reusable-factor route no longer leaks its
regenerated blocks into the lowering as XLA constants, and the coarse
preconditioner carries the magnetic drifts Fortran keeps -- 10.2x fewer
iterations on filteredW7X...noEr and 28.2x on ...withEr.

The memory guard sizes against available memory with per-route overheads, and
tier-1 convergence is judged on a shared column scale so a small-norm
right-hand side no longer vetoes an exact direct solve.

Repository history was rewritten to drop files that no longer exist: a clone is
20.7 MiB instead of 70.4 MiB. Existing clones must be re-cloned.