fix(testkit): macOS compat + fix test 8c ordering (#24)

artifacts/api-server/src/routes/metrics.ts

@@ -0,0 +1,19 @@
+import { Router, type Request, type Response } from "express";
+import { metricsService } from "../lib/metrics.js";
+import { makeLogger } from "../lib/logger.js";
+
+const router = Router();
+const logger = makeLogger("metrics");
+
+router.get("/metrics", async (_req: Request, res: Response) => {
+  try {
+    const snapshot = await metricsService.snapshot();
+    res.json(snapshot);
+  } catch (err) {
+    const message = err instanceof Error ? err.message : "Failed to collect metrics";
+    logger.error("snapshot failed", { error: message });
+    res.status(500).json({ error: message });
+  }
+});
+
+export default router;