Build a Laravel-native Memory system that uses HSG (Hierarchical Semantic Graph) architecture within ULPI. This system enables AI agents to store, retrieve, and manage memories across five cognitive sectors with intelligent decay, semantic connections, and hybrid search capabilities.
Key Decisions:
- Configurable Classification: Free tier uses regex (fast, zero cost), paid tier uses LLM (higher accuracy)
- Hybrid subscription model: Plan-based feature access with included quotas + metered overage billing