Stabilize early objective QA gate

scripts/qa-repeat.mjs

@@ -61,6 +61,11 @@ console.log(
   `QA repeat summary: runs=${aggregate.runs.length} battles=${aggregate.battleCount} processFailures=${aggregate.summary.runsWithProcessFailures} objectiveMisses=${aggregate.summary.totalMissedObjectives}`
 );
 
+if (aggregate.summary.runsWithProcessFailures > 0 || aggregate.summary.totalMissedObjectives > 0) {
+  console.error('QA repeat failed: process failures or missed objectives were detected.');
+  process.exitCode = 1;
+}
+
 function buildAggregateReport(reports) {
   const missedObjectiveCounts = new Map();
   const battleOutcomes = new Map();