feat: add ReconcileDateRangeCard to settings page; enhance date picker layout in statistics and transaction filters components

services/transaction.service.ts

@@ -245,4 +245,32 @@ export const transactionService = {
       duplicatesFound: duplicatesToDelete.length,
     };
   },
+
+  async reconcileByDateRange(
+    startDate: string | undefined,
+    endDate: string,
+    reconciled: boolean = true,
+  ): Promise<{ updatedCount: number }> {
+    // Update all transactions in the date range
+    // If startDate is not provided, use a very old date to include all transactions up to endDate
+    const whereClause: {
+      date: { lte: string; gte?: string };
+      isReconciled: boolean;
+    } = {
+      date: {
+        lte: endDate,
+        ...(startDate && { gte: startDate }),
+      },
+      isReconciled: !reconciled, // Only update transactions that don't already have the target state
+    };
+
+    const result = await prisma.transaction.updateMany({
+      where: whereClause,
+      data: {
+        isReconciled: reconciled,
+      },
+    });
+
+    return { updatedCount: result.count };
+  },
 };