update ai insight to give reasoning for the insight

utils/__tests__/insightParse.test.ts

@@ -0,0 +1,55 @@
+import { describe, it, expect } from 'vitest';
+import { parseAiResult } from '../insightParse.ts';
+
+/**
+ * The multi-line insight format (PENYEBAB / TINDAKAN) is what broke this:
+ * qwen2.5 writes those line breaks as literal newlines inside the JSON string,
+ * which `JSON.parse` rejects outright. A valid answer was being discarded and
+ * the card showed "Respons AI tidak dapat diproses".
+ */
+describe('parseAiResult — model JSON that is not quite JSON', () => {
+  it('accepts literal newlines inside a string value', () => {
+    const raw = `{"kesimpulan":"Mortalitas 9,1% di atas standar.","insight":"PENYEBAB:
+1. Suhu 34°C di hari 12-15. [Terbukti dari data]
+TINDAKAN:
+1. Turunkan suhu ke 28°C."}`;
+
+    const parsed = parseAiResult(raw);
+    expect(parsed).not.toBeNull();
+    expect(parsed?.kesimpulan).toBe('Mortalitas 9,1% di atas standar.');
+    // The line breaks must SURVIVE — the card renders them with
+    // `whitespace-pre-line`, so collapsing them would flatten the format.
+    expect(parsed?.insight.split('\n')).toHaveLength(4);
+    expect(parsed?.insight).toContain('PENYEBAB:');
+    expect(parsed?.insight).toContain('TINDAKAN:');
+  });
+
+  it('accepts tabs and carriage returns inside a string value', () => {
+    const parsed = parseAiResult('{"kesimpulan":"a\tb","insight":"c\r\nd"}');
+    expect(parsed?.kesimpulan).toBe('a\tb');
+    expect(parsed?.insight).toContain('c');
+    expect(parsed?.insight).toContain('d');
+  });
+
+  it('leaves already-escaped newlines alone', () => {
+    const parsed = parseAiResult('{"kesimpulan":"satu\\ndua","insight":"tiga"}');
+    expect(parsed?.kesimpulan).toBe('satu\ndua');
+  });
+
+  it('does not confuse an escaped quote for the end of a string', () => {
+    const raw = '{"kesimpulan":"dia bilang \\"panas\\" sekali","insight":"x\ny"}';
+    const parsed = parseAiResult(raw);
+    expect(parsed?.kesimpulan).toBe('dia bilang "panas" sekali');
+    expect(parsed?.insight).toBe('x\ny');
+  });
+
+  it('still handles a code fence around the object', () => {
+    const parsed = parseAiResult('```json\n{"kesimpulan":"a","insight":"b\nc"}\n```');
+    expect(parsed?.kesimpulan).toBe('a');
+    expect(parsed?.insight).toBe('b\nc');
+  });
+
+  it('returns null when there is no object at all', () => {
+    expect(parseAiResult('maaf, saya tidak bisa menjawab')).toBeNull();
+  });
+});