With all the current industry debates about AI replacing developers, I built a LangGraph multi-agent system to act as a strict senior engineer and review my Pull Requests. I wanted an unfeeling, logic-driven reviewer. Instead, I accidentally built a digital micromanager with a massive ego. How it works: A GitHub webhook triggers a FastAPI backend when a PR is opened. A Retrieval Agent pulls the repository context from a ChromaDB vector store. A Critic Agent (GPT-4o) analyzes the .d...