Initial project structure for spice2wireviz

SPICE netlist to WireViz YAML converter with:
- Custom lightweight netlist parser (.net/.cir/.sp)
- Single-module mapper (subcircuit external interface)
- Inter-module mapper (multi-board wiring)
- Filter engine with glob patterns
- Click CLI with auto-detection, inspection commands
- Optional .asc parser via spicelib
- Comprehensive test suite with fixtures

pyproject.toml

@@ -0,0 +1,37 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "spice2wireviz"
+version = "2026-02-13"
+description = "Convert LTspice SPICE netlists to WireViz wiring diagrams"
+authors = [{name = "Ryan Malloy", email = "ryan@supported.systems"}]
+requires-python = ">=3.11"
+license = {text = "MIT"}
+readme = "README.md"
+dependencies = [
+    "pyyaml>=6.0",
+    "click>=8.0",
+    "pydantic>=2.0",
+]
+
+[project.optional-dependencies]
+asc = ["spicelib>=1.4.9"]
+dev = ["ruff", "pytest", "pytest-cov"]
+
+[project.scripts]
+spice2wireviz = "spice2wireviz.cli:main"
+
+[tool.hatch.build.targets.wheel]
+packages = ["src/spice2wireviz"]
+
+[tool.ruff]
+target-version = "py311"
+line-length = 100
+
+[tool.ruff.lint]
+select = ["E", "F", "I", "W", "UP", "B", "SIM", "RUF"]
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]