Add live parallel trial API

Author: hihihhi

api/trials/parallel-latest.js

@@ -0,0 +1,32 @@
+const { json, methodGuard, basePayload, artifactJson } = require('../_qrae');
+
+module.exports = function handler(req, res) {
+  if (!methodGuard(req, res)) return;
+  const trial = artifactJson('configs/qrae_parallel_trial_001.json', {
+    system: 'QRAE-RD',
+    version: '0.9.0',
+    trial_id: 'missing',
+    instances: [],
+    aggregate_feedback: {},
+  });
+
+  const summary = {
+    trialId: trial.trial_id,
+    instanceCount: (trial.instances || []).length,
+    universes: (trial.instances || []).map((x) => x.universe),
+    statuses: (trial.instances || []).map((x) => ({
+      instance_id: x.instance_id,
+      universe: x.universe,
+      verdict: x.quality_gate_verdict ? x.quality_gate_verdict.status : 'unknown',
+      outcome: x.outcome,
+    })),
+    winnerForNextSprint: trial.aggregate_feedback ? trial.aggregate_feedback.winner_for_next_sprint : null,
+  };
+
+  json(res, basePayload({
+    status: 'ready',
+    purpose: 'Latest three-instance production orchestration trial across Polymarket, crypto, and US equities.',
+    summary,
+    trial,
+  }));
+};