614411b5e4
Operator eyeball feedback: landing on an altitude jump-cut the loop back to frame 0. Each morph reproduces the destination clip's first 3s (pipeline trim=0:3) and ends on dst@~3s, so the steady-state loop now starts at LOOP_TAIL_S=3.0 and loops within [3.0, duration] — the morph's last frame hands straight off to the loop, and the morph-covered intro never re-shows at rest (removes the overlapping 'altitude video that is part of the morph'). E2E asserts a landed clip loops from ~3s, not 0. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>