v1.0.1 of saia_core

Systemic Artificial Intelligence Agent (SAIA) core models, use cases, and translation contracts. Changelog excerpt: - English Standardization: Fully standardized all comments, dartdoc APIs, and default fallback names and descriptions to English (e.g. Systemic Artificial Intelligence Agent). - Comprehensive API Documentation: Added rich dartdoc comments on every single public model class, constructor, field, and interface method. - Recognized OSI License: Overwrote the partial Apache License header with the full, official Apache 2.0 text for recognition. - Example Added: Developed a beautiful, [...]