fix(web-probe): ignore terminal duration snap in jump detector (#767)

Co-authored-by: Codex <codex@noreply.local>

scripts/src/hwlab-node-web-observe-runner-source.ts

@@ -4491,7 +4491,8 @@ function detectTurnTimingNonMonotonic(columns, rows) {
           const sampleDeltaSeconds = elapsedSecondsBetween(previous.ts, row.ts);
           const delta = current - previous.value;
           const allowedIncreaseSeconds = sampleDeltaSeconds + alertThresholds.turnTimingSampleSlackSeconds;
-          if (delta > allowedIncreaseSeconds) {
+          const terminalTransition = !isTerminalTurnStatus(previous.status) && isTerminalTurnStatus(cell.status);
+          if (delta > allowedIncreaseSeconds && !terminalTransition) {
             totalElapsedForwardJumps.push({
               columnId: column.id,
               columnLabel: column.label,
@@ -4501,9 +4502,11 @@ function detectTurnTimingNonMonotonic(columns, rows) {
               fromSeq: previous.seq,
               fromTs: previous.ts,
               fromValue: previous.value,
+              fromStatus: previous.status ?? null,
               toSeq: row.seq ?? null,
               toTs: row.ts ?? null,
               toValue: current,
+              toStatus: cell.status ?? null,
               delta,
               sampleDeltaSeconds,
               allowedIncreaseSeconds,
@@ -4628,7 +4631,7 @@ function detectTurnTimingNonMonotonic(columns, rows) {
             });
           }
         }
-        previousByMetric.set(metric, { value: current, seq: row.seq ?? null, ts: row.ts ?? null });
+        previousByMetric.set(metric, { value: current, seq: row.seq ?? null, ts: row.ts ?? null, status: cell.status ?? null });
       }
     }
   }