Improve NOMOS GEO-QA discovery metadata

Add truthful repository tags for machine-readable content, reference corpus, ebook and PDF formats, and the canonical question registry. Rights and licence remain unchanged.

README.md

@@ -21,6 +21,11 @@ tags:
 - entity-representation
 - evidence
 - citation-readiness
+- machine-readable
+- reference-corpus
+- ebook
+- pdf
+- canonical-question-registry
 size_categories:
 - n<1K
 configs:
@@ -184,4 +189,4 @@ For a non-English edition, replace the DOI with the language-specific DOI listed
 
 ## Security
 
-This repository contains publication artifacts only. Do not submit secrets, personal data, private evidence packs or credentials through repository issues or discussions. Report security concerns through the process described in [SECURITY.md](./SECURITY.md).
+This repository contains publication artifacts only. Do not submit secrets, personal data, private evidence packs or credentials through repository issues or discussions. Report security concerns through the process described in [SECURITY.md](./SECURITY.md).