This repository provides a systematic learning path for LangChain 1.0 and LangGraph 1.0, covering agent development fundamentals to实战 projects. It demonstrates how to create agents using the new create_agent API, implement multi-agent systems, and build Agentic RAG pipelines. The repo includes structured output with Pydantic, middleware-based execution control, and plans for full-stack projects using FastAPI, Vue, ChromaDB, and MCP integration.