Concepts overview

Core ideas you'll use across the library:

• Graphs: Directed graphs of nodes and conditional edges
• State: Typed wrapper around KernelArguments with versioning, validation
• Nodes: Function, Conditional, Loop, ErrorHandler, HumanApproval, Subgraph, etc.
• Execution: Sequential, parallel, distributed; checkpointing and recovery
• Streaming: Real-time events for UI and observability
• Visualization: DOT, Mermaid, JSON outputs for docs and tooling