[grade=pending] QA sprint: commit 103 at-risk files from multi-agent sprint work

Committed by Hermes autonomous QA sprint 2026-08-13.
These files were modified during the Aug 12 sprint but never committed.

dashcaddy-api/__tests__/metrics.test.js

@@ -197,7 +197,8 @@ describe('Metrics (singleton)', () => {
       const before = metrics.startTime;
       // Sleep a tick so Date.now() moves forward
       const start = Date.now();
-      while (Date.now() - start < 5) {} // ~5ms busy-wait
+      let spin = start;
+      while (Date.now() - spin < 5) { spin = Date.now(); } // ~5ms busy-wait
       metrics.reset();
       expect(metrics.startTime).toBeGreaterThanOrEqual(before);
       const summary = metrics.getSummary();