Add loop-closure metrics (DreamSim gated + LPIPS/LCE) to revisit + span; condition explainer on revisit

Reorder: TrajectoryCrafter + FrameCrafter before Lyra 2.0 (span + comprehensive)

Span 0.33: show the CONDITION (36 observed frames + full camera trajectory) per scene + explainer

Span 0.33: synchronized simultaneous playback (GT-clock, drift-corrected; scrub GT to scrub all)

Span 0.33: all 13 methods as videos, playback speed 0.25-1x, progress bars, per-frame multi_visit degradation curve

Span page -> span 0.33 revisit only (video + same-pose ranked frame comparison); prune 0.50/1.00 videos

Add camera-motion span comparison (span 0.33 / 0.50 / 1.00): PSNR-vs-span plots + per-scene video grid