Develop, run, and debug the AGENT-Studio repo (Next.js frontend + FastAPI backend). Use for repo onboarding, starting/stopping services (restart.sh, ports 3115/8000), env vars, logs, and common dev workflows. 本仓库开发/排障：启动前后端、端口/日志、环境变量、lint/build、定位关键目录。
./restart.sh to start the full stack (kills ports 8000/3115, starts FastAPI, then Next dev on 3115).src/app/ and shared UI in src/components/.src/app/api/chat/route.ts.backend/main.py and game engine code in backend/engine/.docs/dev_docs/2025-12-31-chat-architecture-refactor.mddocs/dev_docs/2025-12-31-game-playground-roadmap.mddocs/refactoring_docs/2026-01-01-playground-page-refactor.mdnpm install then .npm run dev -- -p 3115cd backend && (source .venv/bin/activate || true) && python main.py.npm run lint, npm run build.OPENROUTER_API_KEY in .env.local for chat (src/app/api/chat/route.ts).http://localhost:8000/health.backend/backend.log when using ./restart.sh.