Development Guide

Prerequisites

Node 22 + Python 3.12
pip + npm

Setup

# Clone
git clone https://github.com/your-org/safetensors-studio.git
cd safetensors-studio

# Backend
cd backend
python -m venv .venv && source .venv/bin/activate  # Windows: .venv\Scripts\activate
pip install -r requirements.txt
cp ../.env.example ../backend/.env  # if using env
uvicorn app.main:app --host 0.0.0.0 --port 8000 --reload

# Frontend (second terminal)
cd ../frontend
npm install
cp ../.env.example .env.local  # edit NEXT_PUBLIC_API_URL if needed
npm run dev

Scripts

Command	Description
`npm run dev`	Next.js dev with HMR
`npm run build`	Production build (Turbopack)
`npm run lint`	ESLint
`uvicorn app.main:app --reload`	FastAPI with auto-reload
`python -m pytest`	Backend tests (add)

Project Conventions

Frontend: App Router, Tailwind, Shadcn/ui, Recharts, lucide-react, clsx/tailwind-merge
Backend: FastAPI + Pydantic v2, Transformers + Torch + Accelerate
Commits: Conventional Commits (feat:, fix:)
Branch: feat/*, fix/* → PR to main

Testing the Stack

# Backend health
curl http://localhost:8000/api/health
curl http://localhost:8000/docs  # Swagger

# Frontend
curl http://localhost:3000

# Load demo model (no GPU needed)
mkdir -p /tmp/demo && echo '{"model_type":"llama"}' > /tmp/demo/config.json && touch /tmp/demo/model.safetensors
curl -X POST http://localhost:8000/api/model/load -H "Content-Type: application/json" -d '{"model_path":"/tmp/demo","dtype":"float16"}'

Troubleshooting

Port 8000 in use: lsof -i :8000 / netstat -ano | findstr :8000 then kill
Torch not found: pip install torch --index-url https://download.pytorch.org/whl/cpu (or cu121 for GPU)
WS 404: TelemetryCharts falls back to HTTP polling — safe to ignore in dev
PDF Arabic ?: Ensure tahoma.ttf exists or install arabic-reshaper + python-bidi

IDE

VS Code: recommended extensions Tailwind CSS IntelliSense, Python, Pylance
Format: prettier (frontend), black/ruff (backend, optional)