Add research note: LangGraph - #25
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August 10, 2026 14:55
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Adds a research note on LangGraph: Pregel-style superstep graph execution, the state/reducer model, the Command primitive, two-tier checkpointer/store persistence, interrupt()-based human-in-the-loop, the four documented multi-agent patterns (subagents/handoffs/skills/router) with quantified cost comparisons, first-party MCP support, notable absence of A2A protocol support, and LangSmith Deployment as the commercial hosting layer. Cross-references
google-adk.md,a2a-protocol.md,temporal.md, andopentelemetry-genai.md.