DCRP98 / X72R81: Moving-Pancake Gap and X/N/T Confluence

Following DCRP97's exclusion result for the frozen canonical pancake tensor, this round points out that reading it as excluding the entire DCRP41 moving-pancake equality manifold would overstate the proof — a correction for what D97 missed: DCRP41's actual zero-shape equality manifold is the time-dependent moving pancake jet A_pan(s), whose coefficient a(s) is positive on period average but may change sign during part of the period. It proves that under the planar lock Qn=0 the motion term is invisible to SGS energy transfer, so positive SGS work can coexist algebraically within the zero-shape action via a temporary reverse-pancake phase (a(s)<0). However, this correction creates no new endpoint: DCRP50 still excludes the nonzero pure-affine central pancake, and DCRP60 proves that any nonzero continuation must exit into X∨N∨T, so this round's dual-lock phase-slip conveyor is not an independent endpoint but reconverges into the older X72/non-affine-stretching/turnover compiler — leaving the next round to overlay the Kelvin slip sidecar and re-examine X/N/T recurrence.