feat: Add request logging and traffic metrics for API performance monitoring

test/support/nextcloud.js

@@ -73,6 +73,8 @@ export async function startApi(env = {}) {
     PSU_SOURCE_ORIGIN: `http://127.0.0.1:${source.address().port}`,
     PSU_DATA_DIR: data,
     PSU_SOURCE_TIMEOUT_MS: "500",
+    // The request log would drown the test output; the metrics test turns it on.
+    PSU_REQUEST_LOG: "off",
     ...env,
   });
   const { app } = await import("../../server/index.js");