feat: register 'Salary' PayrollAdjustment type as additive

core/models.py

@@ -315,6 +315,7 @@ class PayrollAdjustment(models.Model):
         ('New Loan',          'Loan'),
         ('Advance Payment',   'Advance'),
         ('Advance Repayment', 'Advance Repaid'),
+        ('Salary',            'Salary'),
     ]
 
     worker = models.ForeignKey(Worker, on_delete=models.CASCADE, related_name='adjustments')

core/tests.py

@@ -3383,3 +3383,15 @@ class ManagerSalariedPayModelTests(TestCase):
         )
         self.assertEqual(m.pay_type, 'fixed')
         self.assertTrue(m.is_salaried)
+
+
+# === MANAGER / SALARIED PAY - 'Salary' adjustment type registration ===
+class ManagerSalariedPayTypeRegistrationTests(TestCase):
+    def test_salary_is_a_valid_adjustment_type(self):
+        from core.models import PayrollAdjustment
+        type_values = [c[0] for c in PayrollAdjustment.TYPE_CHOICES]
+        self.assertIn('Salary', type_values)
+
+    def test_salary_is_additive(self):
+        from core.views import ADDITIVE_TYPES
+        self.assertIn('Salary', ADDITIVE_TYPES)

core/views.py

@@ -48,7 +48,8 @@ from .site_report_schema import COUNT_METRICS, CHECK_METRICS, label_for
 # These define which adjustment types ADD to a worker's pay vs SUBTRACT from it.
 # "New Loan" and "Advance Payment" are additive — the worker receives money upfront.
 # "Loan Repayment" and "Advance Repayment" are deductive — they reduce net pay.
-ADDITIVE_TYPES = ['Bonus', 'Overtime', 'New Loan', 'Advance Payment']
+# 'Salary' = manager / fixed-salary monthly pay (additive).
+ADDITIVE_TYPES = ['Bonus', 'Overtime', 'New Loan', 'Advance Payment', 'Salary']
 DEDUCTIVE_TYPES = ['Deduction', 'Loan Repayment', 'Advance Repayment']