Typed knowledge graph for structured agent memory, entity management, and cross-skill state sharing.

• Supports 15+ core entity types (Person, Project, Task, Event, Document, etc.) with typed properties, relations, and constraint validation
• Enables graph queries, traversals, and dependency tracking; model multi-step plans as sequences of validated graph transformations
• Stores data as append-only JSONL by default; schema-driven validation prevents invalid mutations and enforces cardinality, enums, and acyclic constraints
• Skills declare read/write contracts and preconditions/postconditions; integrates with causal inference logging and cross-skill communication patterns