Handle single Scattermind action thread handoffs

scripts/check-rank-feedback.mjs

@@ -343,6 +343,37 @@ try {
   assert.equal(closingNoteFallback.buildOrderDetails.validateNext[0].sourceSection, 'concept-map.questionsToSitWith');
   assert.equal(closingNoteFallback.handoff.readiness.status, 'ready');
 
+  const singleThreadQuestionResponse = await fetch(`${base}/api/rank-feedback`, {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({
+      sourceName: 'Scattermind',
+      artifactId: 'concept_map_single_thread_questions',
+      originalPrompt: 'Clarify a local class idea and carry one action thread plus proof questions into Ranker.',
+      conceptMap: {
+        working_name: 'Local class first proof',
+        opening_reflection: 'The idea should become one manual proof before any scheduling platform.',
+        action_threads: [
+          'Start by running one manual class invite test with five local parents and record who replies.',
+        ],
+        questions_to_sit_with: [
+          'Will five local parents reply to a plain invite without a polished booking page?',
+          'What objection appears before price, timing, or trust?',
+        ],
+        reference_code: 'SM-ONE-THREAD',
+      },
+    }),
+  });
+  assert.equal(singleThreadQuestionResponse.status, 200);
+  const singleThreadQuestion = await singleThreadQuestionResponse.json();
+  assert.equal(singleThreadQuestion.input.optionCount, 3, 'one action thread plus questions should still become a rankable continuation set');
+  assert.equal(singleThreadQuestion.buildOrder.doFirst[0], 'action-thread-1');
+  assert.equal(singleThreadQuestion.buildOrderDetails.doFirst[0].sourceSection, 'concept-map.threadsToHold');
+  assert.equal(singleThreadQuestion.buildOrderDetails.validateNext.length, 2);
+  assert.equal(singleThreadQuestion.buildOrderDetails.validateNext[0].sourceSection, 'concept-map.questionsToSitWith');
+  assert.match(singleThreadQuestion.brief.decisionReceipt.firstProofStep, /manual proof/i);
+  assert.equal(singleThreadQuestion.handoff.readiness.status, 'ready');
+
   const softDashLabelResponse = await fetch(`${base}/api/rank-feedback`, {
     method: 'POST',
     headers: { 'Content-Type': 'application/json' },