Harden audio meter regression coverage

scripts/test_rta_profile.mjs

@@ -21,6 +21,7 @@ const forced = context.buildRtaRuntimeConfig({
   RTA_BPO_MODE: '1_12',
   RTA_FREQ_RANGE: 'lf',
   RTA_IIR_ORDER: 2,
+  RTA_DETECTOR: 'peak',
   CORR_RESPONSE_S: 2.5,
   CORR_RESET_TOKEN: 7,
   XY_POINTS: 256,
@@ -29,6 +30,8 @@ assert.equal(forced.engine, 'iir');
 assert.equal(forced.bpo, '1_12');
 assert.equal(forced.freqRange, 'norm');
 assert.equal(forced.order, 6);
+assert.equal(forced.detector, 'peak');
+assert.equal(forced.tauFast, 0.125);
 assert.equal(forced.rtwCenters.length, 121);
 assert.equal(forced.correlationResponseS, 2.5);
 assert.equal(forced.correlationResetToken, 7);

scripts/test_websocket_runtime.mjs

@@ -19,10 +19,15 @@ const [metrics] = sockets;
 let count = 0;
 let lastSeq = 0;
 let invalidPayload = false;
+let maxFrameAgeMs = 0;
 metrics.addEventListener('message', (event) => {
   const frame = JSON.parse(String(event.data));
   const seq = Number(frame.seq);
-  if (seq <= lastSeq || 'spectro' in frame || 'wave_env' in frame || 'xy_l' in frame || 'wave_l' in frame) {
+  const timestamp = Number(frame.timestamp_ms);
+  const age = Date.now() - timestamp;
+  maxFrameAgeMs = Math.max(maxFrameAgeMs, age);
+  if (seq <= lastSeq || !Number.isFinite(timestamp) || age < -100 || age > 500
+      || 'spectro' in frame || 'wave_env' in frame || 'xy_l' in frame || 'wave_l' in frame) {
     invalidPayload = true;
   }
   lastSeq = seq;
@@ -33,4 +38,4 @@ await new Promise((resolve) => setTimeout(resolve, 1100));
 sockets.forEach((socket) => socket.close());
 assert.equal(invalidPayload, false, 'metrics must be ordered and contain no large visual payloads');
 assert.ok(count >= 50 && count <= 75, `expected about 60 metrics/s, received ${count}`);
-console.log(`runtime websocket test passed (${count} metrics in 1.1 s; all three streams opened)`);
+console.log(`runtime websocket test passed (${count} metrics in 1.1 s; max frame age ${maxFrameAgeMs} ms; all three streams opened)`);