Fix tagline consistency: Don't import it. Build it.

- Remove 'just' from all instances of the tagline
- Update banner to lead with tagline
- Consistent branding across docs, CLI, and demos

Makefile

@@ -0,0 +1,162 @@
+# TinyTorch Makefile
+# ==================
+# Simple commands for common development tasks.
+#
+# Usage:
+#   make help        # Show all commands
+#   make test        # Run all tests
+#   make preflight   # Quick verification before work
+#   make release     # Full release validation
+#
+
+.PHONY: help test preflight release clean lint
+
+# Default target
+help:
+	@echo ""
+	@echo "🔥 TinyTorch Development Commands"
+	@echo "=================================="
+	@echo ""
+	@echo "Quick Commands:"
+	@echo "  make preflight     Quick check (~1 min) - run before starting work"
+	@echo "  make test          Run main test suite"
+	@echo "  make test-quick    Fast smoke tests only (~30s)"
+	@echo ""
+	@echo "Release Validation:"
+	@echo "  make release       Full release validation (~10 min)"
+	@echo "  make release-check Pre-release checklist"
+	@echo ""
+	@echo "Development:"
+	@echo "  make lint          Check code style"
+	@echo "  make clean         Remove generated files"
+	@echo "  make setup         Install development dependencies"
+	@echo ""
+	@echo "Testing Levels:"
+	@echo "  make test-e2e-quick      E2E quick tests (~30s)"
+	@echo "  make test-e2e-module     E2E module flow tests (~2min)"
+	@echo "  make test-e2e-full       E2E complete journey (~10min)"
+	@echo "  make test-milestones     Milestone learning tests (~90s)"
+	@echo ""
+
+# ============================================================================
+# QUICK COMMANDS (daily use)
+# ============================================================================
+
+# Quick preflight check - run this before starting work
+preflight:
+	@chmod +x scripts/preflight.sh
+	@./scripts/preflight.sh
+
+# Standard test suite
+test:
+	python -m pytest tests/ -v --ignore=tests/e2e --ignore=tests/milestones -q
+
+# Fast smoke tests only
+test-quick:
+	python -m pytest tests/e2e/test_user_journey.py -k quick -v
+
+# ============================================================================
+# E2E TESTING (by level)
+# ============================================================================
+
+# E2E quick verification (~30 seconds)
+test-e2e-quick:
+	python -m pytest tests/e2e/test_user_journey.py -k quick -v
+
+# E2E module workflow tests (~2 minutes)
+test-e2e-module:
+	python -m pytest tests/e2e/test_user_journey.py -k module_flow -v
+
+# E2E milestone tests
+test-e2e-milestone:
+	python -m pytest tests/e2e/test_user_journey.py -k milestone_flow -v
+
+# E2E complete journey (~10 minutes)
+test-e2e-full:
+	python -m pytest tests/e2e/test_user_journey.py -v
+
+# ============================================================================
+# SPECIALIZED TESTS
+# ============================================================================
+
+# Milestone learning verification (actually trains models, ~90 seconds)
+test-milestones:
+	python -m pytest tests/milestones/test_learning_verification.py -v
+
+# CLI tests
+test-cli:
+	python -m pytest tests/cli/ -v
+
+# Module-specific tests
+test-module-%:
+	python -m pytest tests/$*/ -v
+
+# ============================================================================
+# RELEASE VALIDATION
+# ============================================================================
+
+# Full release validation - run this before any release
+release:
+	@chmod +x scripts/preflight.sh
+	@./scripts/preflight.sh --full
+
+# Pre-release checklist (manual verification)
+release-check:
+	@echo ""
+	@echo "📋 Pre-Release Checklist"
+	@echo "========================"
+	@echo ""
+	@echo "Run each of these commands and verify they pass:"
+	@echo ""
+	@echo "  1. make preflight              # Quick sanity check"
+	@echo "  2. make test-e2e-full          # E2E user journey"
+	@echo "  3. make test-milestones        # ML actually learns"
+	@echo "  4. make test                   # Full test suite"
+	@echo ""
+	@echo "Manual checks:"
+	@echo "  □ README.md is up to date"
+	@echo "  □ Version number bumped in pyproject.toml"
+	@echo "  □ CHANGELOG updated"
+	@echo "  □ Git status is clean"
+	@echo ""
+	@echo "Then run: make release"
+	@echo ""
+
+# ============================================================================
+# DEVELOPMENT UTILITIES
+# ============================================================================
+
+# Install development dependencies
+setup:
+	pip install -e ".[dev]"
+	pip install pytest pytest-cov rich
+
+# Lint code
+lint:
+	python -m py_compile tito/main.py
+	@echo "✓ No syntax errors"
+
+# Clean generated files
+clean:
+	find . -type d -name "__pycache__" -exec rm -rf {} + 2>/dev/null || true
+	find . -type f -name "*.pyc" -delete 2>/dev/null || true
+	find . -type d -name ".pytest_cache" -exec rm -rf {} + 2>/dev/null || true
+	find . -type d -name "*.egg-info" -exec rm -rf {} + 2>/dev/null || true
+	@echo "✓ Cleaned generated files"
+
+# ============================================================================
+# CI/CD TARGETS (used by GitHub Actions)
+# ============================================================================
+
+# CI smoke test (fast, for every commit)
+ci-smoke:
+	python -m pytest tests/e2e/test_user_journey.py -k quick --tb=short -q
+
+# CI full test (for PRs)
+ci-full:
+	python -m pytest tests/ -v --ignore=tests/milestones --tb=short
+
+# CI release validation (for releases)
+ci-release:
+	@./scripts/preflight.sh --full
+