Full rearchitecture using Claude

- event bus systen
- all components are independent
- preparation for web frontend

python-backend/pyproject.toml

@@ -0,0 +1,55 @@
+[project]
+name = "musicmouse"
+version = "2.0.0"
+description = "Host backend for the MusicMouse RFID music player"
+requires-python = ">=3.13"
+dependencies = [
+    "aiomqtt>=2.0",
+    "pydantic>=2.7",
+    "pyserial-asyncio>=0.6",
+    "python-vlc>=3.0",
+    "ruamel.yaml>=0.18",
+]
+
+[project.optional-dependencies]
+dev = ["mypy>=1.10", "pytest-asyncio>=0.23", "pytest>=8.0", "ruff>=0.5"]
+
+[project.scripts]
+musicmouse = "musicmouse.__main__:main"
+
+[build-system]
+requires = ["setuptools>=68"]
+build-backend = "setuptools.build_meta"
+
+[tool.setuptools.packages.find]
+include = ["musicmouse*"]
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]
+asyncio_mode = "auto"
+asyncio_default_fixture_loop_scope = "function"
+filterwarnings = ["error"]
+
+[tool.ruff]
+line-length = 100
+target-version = "py313"
+# Course material and scratch work, not part of the backend. See notebooks/README.md.
+extend-exclude = ["notebooks"]
+
+[tool.ruff.lint]
+select = ["ARG", "B", "C4", "E", "F", "I", "N", "PTH", "RUF", "SIM", "UP", "W"]
+
+[tool.ruff.lint.per-file-ignores]
+"tests/*" = ["ARG001"]
+# Entity is an ABC with optional hooks: empty bodies and unused args are the point.
+"musicmouse/services/mqtt/entity.py" = ["ARG002", "B027"]
+
+[tool.mypy]
+python_version = "3.13"
+strict = true
+files = ["musicmouse"]
+warn_unreachable = true
+
+[[tool.mypy.overrides]]
+module = ["vlc", "serial_asyncio", "ruamel.*"]
+ignore_missing_imports = true