Place ten distinct custom implementations first. Swap two 72-frame training episodes to keep the default Episode 0 preview representative, with matching numeric identifiers, per-episode statistics, source manifests and hashes. All recordings, action/state values, source identities, split memberships, frame offsets and normalization are preserved. Historical render provenance remains unchanged and is linked through the source manifest. See provenance/HF_PREVIEW_ORDER.json.
