feat: full backend (untested)

backend/pyproject.toml

@@ -0,0 +1,36 @@
+[project]
+name = "common-availability"
+version = "0.1.0"
+description = "Calendar availability coordination service"
+requires-python = ">=3.12"
+dependencies = [
+    "fastapi>=0.115.0",
+    "uvicorn[standard]>=0.32.0",
+    "sqlalchemy>=2.0.0",
+    "alembic>=1.14.0",
+    "asyncpg>=0.30.0",
+    "psycopg2-binary>=2.9.0",
+    "httpx>=0.28.0",
+    "icalendar>=6.0.0",
+    "python-dateutil>=2.9.0",
+    "pydantic[email]>=2.10.0",
+    "pydantic-settings>=2.6.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=8.3.0",
+    "pytest-asyncio>=0.24.0",
+    "ruff>=0.8.0",
+]
+
+[tool.ruff]
+line-length = 88
+target-version = "py312"
+
+[tool.ruff.lint]
+select = ["E", "F", "I", "N", "W"]
+
+[tool.pytest.ini_options]
+asyncio_mode = "auto"
+asyncio_default_fixture_loop_scope = "function"