ai insight rework #3, add root cause to daily ai insight

utils/insightParse.ts

@@ -15,6 +15,7 @@
 
 export interface AiResult {
   summary: string;
+  akar_masalah?: string;
   insight: string;
 }
 
@@ -28,6 +29,17 @@ const KESIMPULAN_KEYS = [
   'conclusion',
 ];
 
+/** Field names seen standing in for the root cause / factors. */
+const AKAR_MASALAH_KEYS = [
+  'akar_masalah',
+  'akar_penyebab',
+  'root_cause',
+  'penyebab',
+  'faktor_penyebab',
+  'faktor_pemicu',
+  'indikasi_masalah',
+];
+
 /** Field names seen standing in for the recommendation. */
 const INSIGHT_KEYS = [
   'insight',
@@ -122,6 +134,9 @@ export const parseAiResult = (text: string): AiResult | null => {
   const kesimpulanHit = takeFirst(parsed, KESIMPULAN_KEYS);
   if (kesimpulanHit) used.add(kesimpulanHit.key);
 
+  const akarMasalahHit = takeFirst(parsed, AKAR_MASALAH_KEYS);
+  if (akarMasalahHit) used.add(akarMasalahHit.key);
+
   const insightHit = takeFirst(parsed, INSIGHT_KEYS);
   if (insightHit) used.add(insightHit.key);
 
@@ -136,6 +151,7 @@ export const parseAiResult = (text: string): AiResult | null => {
     .filter((line) => line.length > 0);
 
   let kesimpulan = kesimpulanHit?.text ?? '';
+  const akarMasalah = akarMasalahHit?.text ?? '';
   let insight = insightHit?.text ?? '';
 
   if (!kesimpulan && leftovers.length > 0) {
@@ -147,10 +163,11 @@ export const parseAiResult = (text: string): AiResult | null => {
     insight = [insight, ...leftovers].filter(Boolean).join('\n\n');
   }
 
-  if (!kesimpulan && !insight) return null;
+  if (!kesimpulan && !insight && !akarMasalah) return null;
 
   return {
     summary: kesimpulan || 'Model tidak mengembalikan ringkasan eksplisit.',
+    akar_masalah: akarMasalah || undefined,
     insight: insight || 'Model tidak mengembalikan rekomendasi eksplisit.',
   };
 };