feat(v2): complete v2 reimplementation

tests/contract/test_api_conventions.py

@@ -35,16 +35,17 @@ async def test_readyz_rejects_unmigrated_database(tmp_path) -> None:
         response = await client.get("/readyz")
     await app.state.engine.dispose()
     assert response.status_code == 503
-    assert response.json()["code"] == "schema_not_current"
+    assert response.json()["code"] == "dependency_unavailable"
 
 
 @pytest.mark.asyncio
-async def test_readyz_is_truthful_before_and_after_setup(app_client) -> None:
+async def test_readyz_reports_runtime_dependencies_before_and_after_setup(
+    app_client,
+) -> None:
     client, _ = app_client
     before = await client.get("/readyz")
-    assert before.status_code == 503
-    assert before.headers["content-type"].startswith("application/problem+json")
-    assert before.json()["code"] == "setup_required"
+    assert before.status_code == 200
+    assert before.json()["status"] == "ready"
 
     assert (await setup_admin(client)).status_code == 201
     after = await client.get("/readyz")
@@ -52,6 +53,22 @@ async def test_readyz_is_truthful_before_and_after_setup(app_client) -> None:
     assert after.json()["status"] == "ready"
 
 
+@pytest.mark.asyncio
+async def test_metrics_are_prometheus_text_without_sensitive_request_data(
+    app_client,
+) -> None:
+    client, _ = app_client
+    assert (await client.get("/livez")).status_code == 200
+
+    response = await client.get("/metrics")
+
+    assert response.status_code == 200
+    assert response.headers["content-type"].startswith("text/plain; version=0.0.4")
+    assert "backup_tool_http_requests_total" in response.text
+    assert "backup_tool_active_executions" in response.text
+    assert "backup_tool_filesystem_free_bytes" in response.text
+
+
 @pytest.mark.asyncio
 async def test_protected_endpoint_uses_rfc9457_problem(app_client) -> None:
     client, _ = app_client