Prepare release repository for publication

README.md

@@ -11,6 +11,7 @@ Code and processed model inputs for generating two-dimensional party-position es
 - `metadata/` — data dictionary and source-support documentation.
 - `docs/` — raw data source documentation, coding decisions, and operational notes.
 - `diagnostics/` — repository diagnostics report regenerated after model estimation.
+- `data/releases/` — release-ready data files, checksums, and diagnostics report.
 
 Processed inputs needed by the model are included in `data/` so the estimation step can be reproduced from the model-ready data.
 
@@ -109,3 +110,18 @@ The two position dimensions are scaled from 0 to 1:
 - Cultural cosmopolitan--traditionalist: cosmopolitan to traditionalist.
 
 Column definitions are in `metadata/data_dictionary.csv`.
+
+## Release files
+
+The public release assets are:
+
+- `party_2d_election_year_panel_v0.zip`
+- `party_2d_annual_model_output_v0.zip`
+- `party_2d_diagnostics_report_v0.pdf`
+- `SHA256SUMS`
+
+`SHA256SUMS` hashes the release assets listed above.
+
+## License
+
+Repository contents are released under CC BY 4.0 except where third-party source terms require otherwise. See `LICENSE`.