Persistence or Turnover? A galaxy–galaxy lensing programme for the excess-acceleration fork in KiDS-1000. II. Certified spectroscopic isolation, a four-fold reproduced deep-tail slope, and a frozen decision protocol for DESI DR2

Persistence or Turnover? A galaxy–galaxy lensing programme for the excess-acceleration fork in KiDS-1000. II. Certified spectroscopic isolation, a four-fold reproduced deep-tail slope, and a frozen decision protocol for DESI DR2. Paper II of the fork series: the six-entry isolation-criterion ledger (four instructive failures including the photo-z label-error pathology and the uncertifiability of the classic 0.1 M* spectroscopic cut at GAMA x KiDS-Bright depth), the certified 39,015-lens union across GAMA DR4 G3C non-membership and DESI DR1 BGS peer-or-better isolation, the verified environment purge, the one-point/0.005-dex near-miss of the pre-registered acceptance bar (power forecast confirmed by four independent samples), the four-fold reproduced deep-tail slope ~0.6 (halo point-mass turnover excluded at 4.8 sigma; marginally steep of the metric 1/2), the full-profile shape tension stated plainly, and the decision protocol frozen verbatim with its mechanical execution on DESI DR2 pre-announced. The verdict section of the series is deliberately vacant. This record is part of the finite-QEC substrate / It-from-Bit publication refresh.