feat: establish sbom nexus extraction slice

Assistant: codex
Assistant-Model: gpt-5.6-sol
Assistant-Session: 01a028f0-a42f-7582-89a8-ebaad7343834

pyproject.toml

@@ -0,0 +1,39 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "sbom-nexus"
+version = "0.1.0"
+description = "SBOM capture, history, evaluation, and bounded catch-up service"
+readme = "README.md"
+requires-python = ">=3.11"
+dependencies = [
+  "fastapi>=0.115",
+  "pydantic>=2.10",
+  "pyyaml>=6.0",
+  "uvicorn>=0.34",
+]
+
+[dependency-groups]
+dev = [
+  "httpx>=0.28",
+  "pytest>=7.4",
+  "ruff>=0.9",
+]
+
+[project.scripts]
+sbom-nexus = "sbom_nexus.cli:main"
+
+[tool.hatch.build.targets.wheel]
+packages = ["src/sbom_nexus"]
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]
+
+[tool.ruff]
+line-length = 100
+target-version = "py311"
+
+[tool.ruff.lint]
+select = ["E", "F", "I", "UP", "B"]