Card: note raw_snippets.json is Zenodo-only

README.md

@@ -66,6 +66,10 @@ makes the corpus **browsable in the dataset Viewer** and easy to pull with the `
 
 > **Note on `.npy` / `.index` / `.pkl`:** these binary artifacts do not render in the Viewer by
 > design; the Parquet shards provide the browsable view of the same underlying rows.
+>
+> **Also on Zenodo only:** the raw pre-migration corpus `raw_snippets.json` (~1.75 GiB) lives in the
+> [Zenodo record](https://doi.org/10.5281/zenodo.20586256) but is intentionally **not** mirrored here
+> — its content is already captured by `snippets.db` and the Parquet shards.
 
 ### Data fields (`snippets` table / Parquet)