diff --git a/README.md b/README.md
index 737b48f..4bcaf77 100644
--- a/README.md
+++ b/README.md
@@ -45,7 +45,7 @@ Ranker's continuation job is narrow:
 
 `Snapshot / Concept Map → candidate feature/action set → Rank-ready build order`
 
-`POST /api/rank-feedback` accepts a `prioritix-feature-set-v1`-style payload from Scattermind and returns ranked items plus `buildOrder.doFirst / validateNext / defer / park`. It accepts candidate arrays as `features`, `actions`, `nextMoves`, or `candidates` either at the top level or under `featureSet`, so Scattermind can hand off Concept Map next actions without renaming them into fake software features. It also returns a `handoff` object (`rank-feedback-result-v1`) with source provenance, item trace rows, and contract warnings for missing artifact IDs, source sections, original prompt provenance, or evidence on active items. Keep this contract action-first; do not use it as a reason to add generic dashboard, auth, billing, or workspace layers before the bridge has proof.
+`POST /api/rank-feedback` accepts a `prioritix-feature-set-v1`-style payload from Scattermind and returns ranked items plus `buildOrder.doFirst / validateNext / defer / park`. It accepts candidate arrays as `features`, `actions`, `nextMoves`, or `candidates` either at the top level or under `featureSet`, and it can consume a nested `conceptMap.nextActions / nextMoves` artifact directly, so Scattermind can hand off Concept Map next actions without renaming them into fake software features. It also returns a `handoff` object (`rank-feedback-result-v1`) with source provenance, item trace rows, and contract warnings for missing artifact IDs, source sections, original prompt provenance, or evidence on active items. Keep this contract action-first; do not use it as a reason to add generic dashboard, auth, billing, or workspace layers before the bridge has proof.
 
 Candidate items may include optional 1–10 `rankerHints` (`value`, `effort`, `confidence`, `urgency`, `revenue`, `novelty`, `risk`). Ranker blends those explicit Scattermind hints with text heuristics; `effort` is inverted into feasibility. Hints improve the defended order, but `recommendedLane: "defer"` or `"park"` remains a safety rail so dashboard-swamp items do not get promoted by flashy wording. For clean bridge handoff, Scattermind should send `sourceSection` and `evidenceNeeded` on each active next move.
 
diff --git a/scripts/check-rank-feedback.mjs b/scripts/check-rank-feedback.mjs
index 80e2d4e..2ae0c67 100644
--- a/scripts/check-rank-feedback.mjs
+++ b/scripts/check-rank-feedback.mjs
@@ -139,7 +139,37 @@ try {
   assert.equal(actions.ranked.find(item => item.id === 'saved-workspace').lane.id, 'park');
   assert.deepEqual(actions.handoff.warnings, []);
 
-  console.log(JSON.stringify({ ok: true, top: data.ranked[0].id, hintedTop: hinted.ranked[0].id, actionTop: actions.ranked[0].id, provenance: data.input.provenance, buildOrder: data.buildOrder }, null, 2));
+  const nestedConceptResponse = await fetch(`${base}/api/rank-feedback`, {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({
+      sourceName: 'Scattermind',
+      idea: 'Scattermind produced a Concept Map artifact with nested next actions.',
+      context: 'Ranker should consume the artifact directly and preserve provenance without asking Scattermind to rename actions as features.',
+      mode: 'mvp',
+      conceptMap: {
+        id: 'concept_map_nested_42',
+        snapshotTitle: 'Course idea continuation',
+        originalPrompt: 'I have a course idea and need the first build step.',
+        nextActions: [
+          { id: 'landing-proof', action: 'One-page promise test', why: 'A tired creator can see whether the promise lands before building lessons.', evidence: 'Can 5 target users describe the promised outcome?', validationSteps: ['Write the promise', 'Ask 5 target users'], rankerHints: { value: 9, effort: 2, confidence: 8, urgency: 8, risk: 2 }, suggestedLane: 'do-first' },
+          { id: 'lesson-library', action: 'Full lesson library', why: 'Build every module, account dashboard, saved progress, and team workspace.', dependencies: ['auth', 'content system', 'progress tracking', 'workspace'], risk: 'Large platform before promise proof.', suggestedLane: 'park' },
+          { id: 'copyable-plan', action: 'Copyable build order brief', why: 'Gives the creator a concrete next step to paste into notes.', evidence: 'Does the brief trigger one real follow-up action?', suggestedLane: 'validate-next' },
+        ],
+      },
+    }),
+  });
+  assert.equal(nestedConceptResponse.status, 200);
+  const nestedConcept = await nestedConceptResponse.json();
+  assert.equal(nestedConcept.input.provenance.artifactId, 'concept_map_nested_42');
+  assert.equal(nestedConcept.input.provenance.conceptMapId, 'concept_map_nested_42');
+  assert.equal(nestedConcept.handoff.source.hasOriginalPrompt, true);
+  assert.equal(nestedConcept.ranked[0].id, 'landing-proof');
+  assert.equal(nestedConcept.ranked.find(item => item.id === 'landing-proof').provenance.sourceSection, 'concept-map.nextActions');
+  assert.equal(nestedConcept.ranked.find(item => item.id === 'lesson-library').lane.id, 'park');
+  assert.deepEqual(nestedConcept.handoff.warnings, []);
+
+  console.log(JSON.stringify({ ok: true, top: data.ranked[0].id, hintedTop: hinted.ranked[0].id, actionTop: actions.ranked[0].id, nestedConceptTop: nestedConcept.ranked[0].id, provenance: data.input.provenance, buildOrder: data.buildOrder }, null, 2));
 } finally {
   server.kill('SIGTERM');
 }
diff --git a/server.js b/server.js
index efbba0e..2d6f171 100644
--- a/server.js
+++ b/server.js
@@ -390,27 +390,34 @@ function parseOptionsFromText(value) {
   }).filter(item => item.title);
 }
 
+function objectFrom(value) {
+  return value && typeof value === 'object' && !Array.isArray(value) ? value : {};
+}
+
 function cleanProvenance(input = {}) {
-  const artifact = input.artifact && typeof input.artifact === 'object' ? input.artifact : {};
-  const source = input.source && typeof input.source === 'object' ? input.source : {};
+  const featureSet = objectFrom(input.featureSet);
+  const artifact = objectFrom(input.artifact || featureSet.artifact);
+  const conceptMap = objectFrom(input.conceptMap || featureSet.conceptMap || artifact.conceptMap);
+  const snapshot = objectFrom(input.snapshot || featureSet.snapshot || artifact.snapshot || conceptMap.snapshot);
+  const source = objectFrom(input.source || featureSet.source || artifact.source);
   return {
-    schema: cleanText(input.schema || artifact.schema || input.type || 'prioritix-feature-set-v1', 80),
-    source: cleanText(input.sourceName || source.name || artifact.sourceName || 'Scattermind', 80),
-    artifactId: cleanText(input.artifactId || input.sourceArtifactId || artifact.id || source.artifactId || '', 120),
-    snapshotTitle: cleanText(input.snapshotTitle || artifact.snapshotTitle || input.ideaTitle || '', 160),
-    conceptMapId: cleanText(input.conceptMapId || artifact.conceptMapId || '', 120),
-    originalPrompt: cleanMultiline(input.originalPrompt || input.initialPrompt || artifact.originalPrompt || source.originalPrompt || '', 1200),
+    schema: cleanText(input.schema || featureSet.schema || artifact.schema || input.type || 'prioritix-feature-set-v1', 80),
+    source: cleanText(input.sourceName || featureSet.sourceName || source.name || artifact.sourceName || 'Scattermind', 80),
+    artifactId: cleanText(input.artifactId || input.sourceArtifactId || artifact.id || source.artifactId || conceptMap.artifactId || conceptMap.id || snapshot.artifactId || snapshot.id || '', 120),
+    snapshotTitle: cleanText(input.snapshotTitle || artifact.snapshotTitle || snapshot.title || snapshot.name || conceptMap.snapshotTitle || input.ideaTitle || '', 160),
+    conceptMapId: cleanText(input.conceptMapId || artifact.conceptMapId || conceptMap.id || conceptMap.artifactId || '', 120),
+    originalPrompt: cleanMultiline(input.originalPrompt || input.initialPrompt || artifact.originalPrompt || source.originalPrompt || snapshot.originalPrompt || snapshot.prompt || conceptMap.originalPrompt || '', 1200),
   };
 }
 
-function normalizeFeatureOption(item, index, fallbackId = 'feature') {
+function normalizeFeatureOption(item, index, fallbackId = 'feature', defaultSourceSection = '') {
   const title = cleanText(item?.title || item?.name || item?.action || '', 140);
   const proofSteps = cleanTextList(item?.proofSteps || item?.proof || item?.validationSteps, 5, 180);
   const dependencies = cleanTextList(item?.dependencies || item?.blockedBy, 5, 120);
   const evidenceNeeded = cleanText(item?.evidenceNeeded || item?.evidence || item?.test || '', 260);
   const userValue = cleanText(item?.userValue || item?.value || item?.outcome || item?.why, 260);
   const risk = cleanText(item?.risk || item?.assumption || item?.unknown || '', 220);
-  const sourceSection = cleanText(item?.sourceSection || item?.section || item?.lane || item?.origin || '', 80);
+  const sourceSection = cleanText(item?.sourceSection || item?.section || item?.lane || item?.origin || defaultSourceSection, 80);
   const recommendedLane = cleanText(item?.recommendedLane || item?.laneHint || item?.suggestedLane || '', 40).toLowerCase();
   const descriptionParts = [
     item?.description || item?.brief || '',
@@ -432,29 +439,35 @@ function normalizeFeatureOption(item, index, fallbackId = 'feature') {
   };
 }
 
-function firstArray(...values) {
-  return values.find(Array.isArray) || null;
+function candidateArrayFrom(...entries) {
+  return entries.find(entry => Array.isArray(entry?.items)) || null;
 }
 
 function optionsFromBody(body = {}) {
-  const featureSet = body.featureSet && typeof body.featureSet === 'object' ? body.featureSet : {};
-  const rawCandidates = firstArray(
-    body.features,
-    featureSet.features,
-    body.actions,
-    featureSet.actions,
-    body.nextMoves,
-    featureSet.nextMoves,
-    body.candidates,
-    featureSet.candidates
+  const featureSet = objectFrom(body.featureSet);
+  const conceptMap = objectFrom(body.conceptMap || featureSet.conceptMap);
+  const rawCandidates = candidateArrayFrom(
+    { items: body.features, sourceSection: 'features' },
+    { items: featureSet.features, sourceSection: 'feature-set.features' },
+    { items: body.actions, sourceSection: 'actions' },
+    { items: featureSet.actions, sourceSection: 'feature-set.actions' },
+    { items: body.nextMoves, sourceSection: 'nextMoves' },
+    { items: featureSet.nextMoves, sourceSection: 'feature-set.nextMoves' },
+    { items: body.candidates, sourceSection: 'candidates' },
+    { items: featureSet.candidates, sourceSection: 'feature-set.candidates' },
+    { items: conceptMap.nextActions, sourceSection: 'concept-map.nextActions' },
+    { items: conceptMap.nextMoves, sourceSection: 'concept-map.nextMoves' },
+    { items: conceptMap.features, sourceSection: 'concept-map.features' },
+    { items: conceptMap.candidates, sourceSection: 'concept-map.candidates' }
   );
   if (rawCandidates) {
-    return rawCandidates.slice(0, 24).map((item, index) => normalizeFeatureOption(item, index)).filter(item => item.title);
+    const fallbackId = rawCandidates.sourceSection.toLowerCase().includes('action') ? 'action' : 'feature';
+    return rawCandidates.items.slice(0, 24).map((item, index) => normalizeFeatureOption(item, index, fallbackId, rawCandidates.sourceSection)).filter(item => item.title);
   }
   if (Array.isArray(body.options)) {
-    return body.options.slice(0, 24).map((item, index) => normalizeFeatureOption(item, index, 'option')).filter(item => item.title);
+    return body.options.slice(0, 24).map((item, index) => normalizeFeatureOption(item, index, 'option', 'options')).filter(item => item.title);
   }
-  return parseOptionsFromText(body.optionsText || featureSet.optionsText || '');
+  return parseOptionsFromText(body.optionsText || featureSet.optionsText || conceptMap.optionsText || '');
 }
 
 function scoreOption(option, mode, context = '') {