add: add new statistcs api

core/apps/finance/migrations/0021_incomecontract_paid_price.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.2.4 on 2025-09-13 16:23
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('finance', '0020_expencecontract_incomecontract'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='incomecontract',
+            name='paid_price',
+            field=models.PositiveBigIntegerField(blank=True, default=0, null=True),
+        ),
+    ]

core/apps/finance/migrations/0022_expencecontract_paid_price.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.2.4 on 2025-09-13 17:13
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('finance', '0021_incomecontract_paid_price'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='expencecontract',
+            name='paid_price',
+            field=models.PositiveBigIntegerField(blank=True, default=0, null=True),
+        ),
+    ]