Add S16–S19 from the 2026-11-03 PiperX collection: 137 unannotated trajectories and 411 frame-exact three-view videos. Exclude the reviewed tea #0/#1 and upside-down-cup #0 recordings; correct the bottle instruction to three bottles. Add 109 train / 28 val samples and preserve all existing S11–S15 files and frozen splits. Dataset/split v1.1.0: 9 tasks, 323 trajectories, 257 train / 66 val. No provenance files.
