Rework core functionality, add CLI and tests

pyproject.toml

@@ -14,10 +14,18 @@ dependencies = [
     "gunicorn>=25.1.0",
     "jinja2-fragments>=1.11.0",
     "pydantic>=2.12.5",
+    "pyparsing>=3.3.2",
+    "pytest>=9.0.2",
     "requests>=2.32.5",
     "sqlalchemy>=2.0.48",
 ]
 
+[project.scripts]
+hxbooks = "hxbooks.cli:cli"
+
 [build-system]
 requires = ["uv_build>=0.10.10,<0.11.0"]
 build-backend = "uv_build"
+
+[tool.pytest.ini_options]
+addopts = ["-v", "--tb=short"]