provenance: experiment line + what changed vs parent

README.md

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+---
+license: apache-2.0
+tags:
+- LeRobot
+- robotics
+---
+
+<!-- dreamer-provenance -->
+## Experiment provenance
+
+**Experiment line:** stack line (colour-cube world). Three cubes differing ONLY in hue; day cycles relabel grasp → pick up → stack. Run pages: https://storage.googleapis.com/rbhowmik-dreamer/site/stack/index.html
+
+First colour-cube seed: the referential go-over family (named hue among identical distractors) plus the context-free verticals.
+
+**What changed:** Root of its line — no parent corpus.
+
+Collected in simulation (robosuite/MuJoCo, Panda): scene + wrist video, proprio, OSC actions, and a language task string minted by the project's verbalizer (certificate → instruction; the relabeler may not invent words).
+<!-- /dreamer-provenance -->