Repair train starter guards and document runnable 2048/512 release

Document Eleusis v0.7.2: RELEASE_REPORT.md

Document Eleusis v0.7.2: release_manifest.json

Document Eleusis v0.7.2: README.md

Use minimal four-column schema for Eleusis v0.7.2

Document Eleusis v0.7.2: audit_manifest.json

Document Eleusis v0.7.2: RELEASE_REPORT.md

Document Eleusis v0.7.2: release_manifest.json

Document Eleusis v0.7.2: README.md

Release Eleusis v0.7.2: 2048 train / 512 test

Upload dataset

Delete data/train-00000-of-00001.parquet with huggingface_hub

Delete data/test-00000-of-00001.parquet with huggingface_hub

Upload dataset

initial commit