Preserve source trace for lens build orders

server.js

@@ -779,7 +779,7 @@ function laneFromBuildOrderLabel(fragment = '') {
   return '';
 }
 
-function optionsFromBuildOrderText(text = '', sourceSection = 'concept-map.lenses.channel') {
+function optionsFromBuildOrderText(text = '', sourceSection = 'concept-map.lenses.channel', sourceTitle = 'Build Order') {
   const fragments = sentenceFragments(text);
   const labelled = fragments.filter(fragment => laneFromBuildOrderLabel(fragment));
   return labelled.map((fragment, index) => {
@@ -796,6 +796,9 @@ function optionsFromBuildOrderText(text = '', sourceSection = 'concept-map.lense
           ? { value: 7, effort: 3, confidence: 6, urgency: 5, risk: 3 }
           : undefined,
       sourceSection,
+      sourceItemId: `${sourceSection}#${index + 1}`,
+      sourceTitle,
+      sourceExcerpt: fragment,
     };
   }).filter(item => item.action);
 }
@@ -838,7 +841,15 @@ function optionsFromBody(body = {}) {
     || buildOrderLens.content
     || buildOrderLens.text
     || '';
-  const buildOrderOptions = optionsFromBuildOrderText(buildOrderText);
+  const buildOrderSourceTitle = cleanText(
+    objectFrom(conceptMapLenses.channel).title
+      || objectFrom(conceptMapLenses.buildOrder).title
+      || objectFrom(conceptMap.buildOrder).title
+      || buildOrderLens.title
+      || 'Build Order',
+    140
+  );
+  const buildOrderOptions = optionsFromBuildOrderText(buildOrderText, 'concept-map.lenses.channel', buildOrderSourceTitle);
   if (buildOrderOptions.length) return normalizeCandidateGroup([{ items: buildOrderOptions, sourceSection: 'concept-map.lenses.channel' }]);
   if (Array.isArray(body.options)) {
     return normalizeOptionIds(body.options.slice(0, 24).map((item, index) => normalizeFeatureOption(item, index, 'option', 'options')).filter(item => item.title));