An agentic RAG system for macOS troubleshooting — a branching LangGraph, a domain knowledge base built from 9 scrapers, and a blind-judge evaluation harness that blocks its own deploys on quality regressions.
A coding agent built on LangGraph from scratch — a planner, a ReAct tool loop, and a network-disabled Docker sandbox — graded against 50 real Django and Sphinx issues from SWE-bench Verified Mini.