Apply maintainer-approved family license: cc-by-sa-4.0. Add the full LICENSE and NOTICE; document upstream provenance, declaration history and unresolved exact SrpWN release permissions. Only README.md, LICENSE and NOTICE are changed. Model artifacts and visibility are unchanged.
Document Serbian WordNet sentiment classifier and research paper
Expand model card with task, labels, original base model, paper citation, paired classifiers, inference example, archived results and provenance. Preserve historical training records and declared license. README-only update; no model artifacts or repository visibility changes.
