feat: scaffold installable namespace package

pyproject.toml

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+[build-system]
+requires = [
+    "setuptools",
+    "wheel",
+    "setuptools-scm[toml]"
+]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "tiararodney.sekft"
+description = "Fine-tune small open models to operate a POSIX shell (sek)"
+authors = [
+    { name = "Tiara Rodney", email = "tiara.rodney@byteb4rb1e.me" }
+]
+readme = "README.md"
+classifiers = [
+  "Development Status :: 3 - Alpha",
+  "Intended Audience :: Developers",
+  "Intended Audience :: Science/Research",
+  "Natural Language :: English",
+  "Operating System :: POSIX :: Linux",
+  "Programming Language :: Python :: 3",
+  "Programming Language :: Python :: 3.9",
+  "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
+  "Topic :: Scientific/Engineering :: Artificial Intelligence",
+  "Topic :: System :: Shells",
+  "Typing :: Typed",
+]
+dependencies = [
+  "tiararodney.posix-sdc",
+]
+dynamic = ["version"]
+requires-python = ">=3.9"
+
+[project.optional-dependencies]
+gpu = [
+  "torch",
+  "transformers",
+  "peft",
+  "datasets",
+  "accelerate",
+  "bitsandbytes",
+  "tensorboard",
+]
+
+[project.scripts]
+sekft-train = "tiararodney.sekft.sft:main"
+sekft-eval = "tiararodney.sekft.eval:main"
+sekft-resident = "tiararodney.sekft.resident:main"
+
+[project.urls]
+Git = "https://git.code.tiararodney.com/tiararodney/sekft"
+
+[tool.setuptools.packages.find]
+where = ["src"]
+namespaces = true
+
+[tool.pytest.ini_options]
+pythonpath = ["src", "../posix-sdc/src"]
+testpaths = ["tests"]
+markers = [
+    "pytest: integration tests runnable without external services",
+    "gpu: requires torch and a GPU",
+    "docker: requires Docker and the sekft-dash image",
+]
+
+[tool.mypy]
+strict = true
+
+[tool.autopep8]
+max_line_length = 80
+aggressive = 3
+recursive = true
+
+[tool.setuptools_scm]

src/tiararodney/sekft/__init__.py

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+"""sekft: fine-tune small open models to operate a POSIX shell (sek).
+
+Consumes the posix-sdc dataset; the trainer, behavioural evaluator, and the
+resident-base harness live here.
+"""