Initial project scaffold

pyproject.toml

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+[build-system]
+requires = ["setuptools>=68", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "kernel-lab"
+version = "0.1.0"
+description = "Educational GPU kernel lab for PyTorch, Triton, and CUDA."
+readme = "README.md"
+requires-python = ">=3.10"
+dependencies = [
+  "numpy>=1.26",
+  "torch>=2.10",
+  "triton>=3.0",
+  "pytest>=8.0",
+  "packaging>=24.0",
+  "cmake>=3.25",
+  "ninja>=1.11",
+]
+
+[tool.uv.sources]
+torch = { index = "pytorch-cu128" }
+
+[[tool.uv.index]]
+name = "aliyun-pypi"
+url = "https://mirrors.aliyun.com/pypi/simple/"
+default = true
+
+[[tool.uv.index]]
+name = "pytorch-cu128"
+url = "https://download.pytorch.org/whl/cu128"
+explicit = true
+
+[tool.setuptools.packages.find]
+include = ["reference*", "kernels*"]
+
+[tool.pytest.ini_options]
+addopts = "-ra --import-mode=importlib"
+testpaths = ["tests", "tasks"]
+markers = [
+  "reference: tests for plain PyTorch references",
+  "skeleton: tests validating learner skeleton behavior",
+  "cuda_required: tests that need CUDA",
+  "triton_required: tests that need Triton",
+]