PHerc Paris 4 surfaces (ufsm, 2026-10-30), .sfc (ufsm surfcomp) format.

wraps/w016.sfc .. w272.sfc  one surface per whole wrap (turn) of the c2f unwrap: wind96 fields at 9.6 um -> count-field reference ->
                            slab fits snapped to it -> fit-join (joined ids .1626). Vertex step 4 voxels at 9.6 um (38.4 um), coordinates
                            in 2.4 um L0 voxels of 20260411134726-2.400um-0.2m-78keV-masked. Wrap number = published GT winding code - 8.
                            The outer wraps (> ~w215) are largely spurious / off-sheet. w016-w077 are NOT core turns: they are junk
                            fragments of the frayed top 6 mm (z 18192-18832) where the top slab fits broke; wraps below ~w150 also carry
                            such a top fragment. The real innermost turns are w078-w093 (see core/).
core/w077.sfc .. w105.sfc   the core re-extracted (ufsm wraps --zr 384,18176 --col-r p90): top/bottom junk cut, columns spaced by the
                            p90 radius so the innermost turns are not under-sampled. Same numbering as wraps/.
strip/strip.sfc             all 257 wraps joined end to end at the angular seam (outermost first) as ONE continuous surface
                            (584284 x 4673, step 4). strip.tsv: strip column -> wrap.
Renders: ../renders/ (per wrap CT | ift3 ink, recto/verso faces, whole-scroll strip mosaic).