Been refactoring the structure, got setup working

Makefile

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+# TinyTorch - Notebook-first ML Systems Course
+# Makefile for convenience commands
+
+.PHONY: help install sync test clean docs jupyter lab setup
+
+# Default target
+help:
+	@echo "TinyTorch - Build ML Systems from Scratch"
+	@echo "=========================================="
+	@echo ""
+	@echo "Available commands:"
+	@echo ""
+	@echo "  install     Install dependencies and setup environment"
+	@echo "  sync        Export notebook code to Python package"
+	@echo "  test        Run all tests"
+	@echo "  test-setup  Run setup module tests"
+	@echo "  clean       Clean notebook outputs and cache"
+	@echo "  docs        Build documentation"
+	@echo "  jupyter     Start Jupyter Lab"
+	@echo "  info        Show system information"
+	@echo "  doctor      Run environment diagnosis"
+	@echo ""
+	@echo "Development workflow:"
+	@echo "  1. make jupyter     # Work in notebooks/"
+	@echo "  2. make sync        # Export to Python"
+	@echo "  3. make test        # Run tests"
+	@echo "  4. make docs        # Build docs (optional)"
+
+# Install dependencies
+install:
+	@echo "🔧 Installing TinyTorch dependencies..."
+	pip install -r requirements.txt
+	pip install nbdev jupyter
+	@echo "✅ Installation complete!"
+
+# Export notebooks to Python package
+sync:
+	@echo "🔄 Exporting notebooks to Python package..."
+	python bin/tito.py sync
+
+# Run all tests
+test:
+	@echo "🧪 Running all tests..."
+	python bin/tito.py test --all
+
+# Run setup module tests specifically
+test-setup:
+	@echo "🧪 Running setup module tests..."
+	python bin/tito.py test --module setup
+
+# Clean notebook outputs and Python cache
+clean:
+	@echo "🧹 Cleaning notebook outputs and cache..."
+	python bin/tito.py nbdev --clean
+	find . -type d -name "__pycache__" -exec rm -rf {} + 2>/dev/null || true
+	find . -type f -name "*.pyc" -delete 2>/dev/null || true
+	@echo "✅ Cleanup complete!"
+
+# Build documentation
+docs:
+	@echo "📚 Building documentation..."
+	python bin/tito.py nbdev --build-docs
+
+# Start Jupyter Lab
+jupyter:
+	@echo "🚀 Starting Jupyter Lab..."
+	python bin/tito.py jupyter --lab
+
+# Alias for jupyter
+lab: jupyter
+
+# Show system information
+info:
+	@echo "ℹ️ System information..."
+	python bin/tito.py info
+
+# Run environment diagnosis
+doctor:
+	@echo "🔬 Running environment diagnosis..."
+	python bin/tito.py doctor
+
+# Setup new environment (for first-time users)
+setup:
+	@echo "🚀 Setting up TinyTorch development environment..."
+	@echo "1. Creating virtual environment..."
+	python -m venv .venv
+	@echo "2. Installing dependencies..."
+	.venv/bin/pip install -r requirements.txt
+	.venv/bin/pip install nbdev jupyter
+	@echo ""
+	@echo "✅ Setup complete!"
+	@echo ""
+	@echo "Next steps:"
+	@echo "  1. Activate the environment: source .venv/bin/activate"
+	@echo "  2. Start coding: make jupyter"
+	@echo "  3. Test your code: make sync && make test"