revert README

README.md

@@ -1,13 +1,20 @@
 ---
-license: cc-by-4.0
-pretty_name: TrialDesignBench Source
-configs:
-- config_name: default
-  data_files:
-  - split: train
-    path: data/tdr.csv
+pretty_name: "TrialDesignBench Source"
+license: other
+license_name: "mixed"
+license_link: LICENSE
+tags:
+  - clinical-trials
+  - statistical-analysis-plan
+  - protocols
+  - benchmark
+  - source-corpus
 ---
 
-# TrialDesignBench Source
+## License
 
-CSV index of clinical trials with linked protocol and SAP PDFs under `documents/<row_id>/`.
+This repository is a mixed-rights source corpus.
+
+- The curated trial metadata, manifests, and dataset annotations created by the TrialDesignBench maintainers are released under the Creative Commons Attribution 4.0 International License (CC BY 4.0).
+- Downloaded Statistical Analysis Plans, protocols, and other source PDFs are third-party documents. They are provided with provenance metadata for research transparency and reproducibility. The TrialDesignBench maintainers do not claim copyright ownership over these documents and do not grant additional rights beyond those available from the original sources.
+- Users are responsible for complying with the terms, rights, and restrictions associated with the original source documents.