fix: add STRT invalid detction, ach server passes config for get events,

sfm/waveform_viewer.html

@@ -483,9 +483,14 @@
       return;
     }
 
-    // Build time axis (ms)
-    const times = Array.from({ length: decoded }, (_, i) =>
-      ((i - pretrig) / sr * 1000).toFixed(2)
+    // Clip to total_samples to exclude zero-padding the device appends beyond
+    // the configured record window.  total = pretrig + post_trig (e.g. 256+3072=3328).
+    // decoded may be larger (e.g. 4495) due to trailing zero-padded bulk-stream frames.
+    const displayCount = (total > 0 && total < decoded) ? total : decoded;
+
+    // Build time axis in seconds (matching Blastware event report layout).
+    const times = Array.from({ length: displayCount }, (_, i) =>
+      ((i - pretrig) / sr).toFixed(3)
     );
 
     // Show charts area
@@ -517,11 +522,16 @@
       const isGeo = ch !== 'Mic';
       let plotSamples, peakLabel, yUnit, tooltipFmt, tickFmt;
 
+      // Clip channel samples to displayCount (same as time axis)
+      const clippedSamples = samples.length > displayCount
+        ? samples.slice(0, displayCount)
+        : samples;
+
       if (isGeo) {
         // Geo channels: counts × (range / 32767) → in/s
         // Scale factor for the waveform shape (may need calibration per unit)
         const scale = geoRange / 32767;
-        plotSamples = samples.map(c => c * scale);
+        plotSamples = clippedSamples.map(c => c * scale);
 
         // Use the device-computed 0C record peak for the label (authoritative).
         // The raw-sample-computed peak can be inflated by frame-boundary artifacts.
@@ -535,11 +545,11 @@
         tickFmt    = v => v.toFixed(4);
       } else {
         // Mic: derive psi/count scale from the 0C peak value, display as psi; show dBL in header
-        const peakCounts = Math.max(...samples.map(Math.abs));
+        const peakCounts = Math.max(...clippedSamples.map(Math.abs));
         const micScale   = (micPeakPsi !== null && peakCounts > 0)
           ? Math.abs(micPeakPsi) / peakCounts
           : 1.0;
-        plotSamples = samples.map(c => c * micScale);
+        plotSamples = clippedSamples.map(c => c * micScale);
         const peakPsi = Math.max(...plotSamples.map(Math.abs));
         const peakDbl = peakPsi > 0 ? 20 * Math.log10(peakPsi / DBL_REF_PSI) : -Infinity;
         peakLabel  = `${peakDbl.toFixed(1)} dBL  (${peakPsi.toExponential(3)} psi)`;
@@ -597,7 +607,7 @@
                 mode: 'index',
                 intersect: false,
                 callbacks: {
-                  title: items => `t = ${items[0].label} ms`,
+                  title: items => `t = ${items[0].label} s`,
                   label: item => tooltipFmt(item.raw),
                 },
               },
@@ -609,7 +619,7 @@
                   color: '#484f58',
                   maxTicksLimit: 10,
                   maxRotation: 0,
-                  callback: (val, i) => renderTimes[i] + ' ms',
+                  callback: (val, i) => renderTimes[i] + ' s',
                 },
                 grid: { color: '#21262d' },
               },
@@ -647,7 +657,7 @@
               const xAxis = chart.scales.x;
               const yAxis = chart.scales.y;
 
-              // Find index of t=0
+              // Find index of the trigger point (t ≥ 0.000 s)
               const zeroIdx = renderTimes.findIndex(t => parseFloat(t) >= 0);
               if (zeroIdx < 0) return;