merge: preserve existing business features on new foundation

pyproject.toml

@@ -28,6 +28,7 @@ dependencies = [
 dev = [
   "pytest>=8.3,<9",
   "pytest-asyncio>=0.25,<1",
+  "aiosqlite>=0.20,<1",
   "ruff>=0.9,<1",
   "mypy>=1.14,<2",
 ]
@@ -38,6 +39,7 @@ include = ["app*"]
 [tool.pytest.ini_options]
 testpaths = ["tests"]
 asyncio_mode = "auto"
+asyncio_default_fixture_loop_scope = "function"
 markers = ["integration: requires local database services"]
 
 [tool.ruff]