Money tracker: Knab CSV import, multi-bank linking, sum reconcile, history range

- Knab statement exports: per-account ids (knab:<account>:<Referentie>), routed by IBAN,
  transfers between own accounts merged into one tracker account are dropped (interest kept)
- Import: multiple files, hand-entered twins get the import id, hand entries equal to the
  sum of 2-3 payments within a day are replaced by them
- bank-link --bank revolut|abn|knab with per-bank default account; ASPSP notes printed
- bank-sync: longest history on an account first sync (--full to force), sum reconcile,
  per-session status so one bank failing does not mark the others
- Timeline: 1 year / 3 years / All history range

src/lib/money-tracker/charts.test.ts

@@ -257,3 +257,27 @@ describe('money tracker calculations', () => {
 		).toBe(30);
 	});
 });
+
+describe('history range', () => {
+	it('starts lines at the range start with the balance they had then', async () => {
+		const { clipSeries, historyStart } = await import('./charts');
+		expect(historyStart('1y', '2026-10-24')).toBe('2025-10-24');
+		expect(historyStart('all', '2026-10-24')).toBeNull();
+		const series = [
+			{
+				label: 'Knab',
+				color: 'x',
+				points: [
+					{ date: '2021-08-24', value: 100 },
+					{ date: '2025-01-01', value: 50 },
+					{ date: '2026-01-01', value: 70 }
+				]
+			}
+		];
+		expect(clipSeries(series, '2025-10-24')[0].points).toEqual([
+			{ date: '2025-10-24', value: 50 },
+			{ date: '2026-01-01', value: 70 }
+		]);
+		expect(clipSeries(series, null)).toBe(series);
+	});
+});