Update version to 2.1.4 in pyproject.toml and clarify AI-assisted code contributions in README.md

Author: wikiselev

README.md

@@ -256,7 +256,7 @@ Contributions are welcome! Please feel free to submit a Pull Request.
 - Public knowledge graph providers (Hetionet, BioKG, OpenBioLink, PrimeKG)
 - PyKEEN, scikit-learn, and Nextflow communities
 - ChEMBL and MeSH data sources
-- Code cleaned up and improved by GitHub Copilot (Claude Sonnet 4.5)
+- Portions of this codebase were generated, refactored, and/or cleaned using GitHub Copilot (Claude Sonnet 4.5). The authors reviewed, modified, and validated all AI-assisted code. Responsibility for the correctness, performance, and reproducibility of the code rests entirely with the authors. 
 
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pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "alethiotx"
-version = "2.1.3"
+version = "2.1.4"
 description = "Alethio Therapeutics Python Toolkit"
 readme = "README.md"
 license = {file = "LICENSE"}