test: add unit test suite for config, health checks, and lifespan wiring

tests/unit/bootstrap/test_lifespan.py

@@ -0,0 +1,19 @@
+import pytest
+from fastapi import FastAPI
+from httpx import AsyncClient
+
+from src.config import Settings
+
+pytestmark = [pytest.mark.unit, pytest.mark.asyncio]
+
+
+async def test_lifespan_starts_and_stops_without_docker(client: AsyncClient) -> None:
+    response = await client.get("/healthz")
+    assert response.status_code == 200
+
+
+async def test_lifespan_binds_resources_to_app_state(app: FastAPI, client: AsyncClient) -> None:
+    await client.get("/healthz")
+    resources = app.state.resources
+    assert isinstance(resources.settings, Settings)
+    assert resources.minio_client is not None