ux(labels): shorter adjustment type labels (display-only rename)

Path A rename - DB values untouched, only TYPE_CHOICES display
labels change:
  'New Loan'          -> shown as 'Loan'
  'Advance Payment'   -> shown as 'Advance'
  'Advance Repayment' -> shown as 'Advance Repaid'

Templates that render the type as visible text switched from
{{ adj.type }} to {{ adj.get_type_display }}. Data attributes and
CSS class slugs keep the raw DB value (identifiers, not labels).

Zero data migration. Zero changes to ADDITIVE_TYPES / DEDUCTIVE_TYPES
constants, hardcoded string comparisons, CSS class names, test
fixtures, or any other code that references the canonical DB value.
Every historic PayrollAdjustment row keeps type='New Loan' /
'Advance Payment' / 'Advance Repayment' as stored.

Django's makemigrations generated a no-op AlterField migration to
record the choices-metadata change.

Tests: 69/69.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

core/migrations/0012_alter_payrolladjustment_type_display_labels.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.2.7 on 2026-04-24 07:45
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0011_worker_tax_number'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='payrolladjustment',
+            name='type',
+            field=models.CharField(choices=[('Bonus', 'Bonus'), ('Overtime', 'Overtime'), ('Deduction', 'Deduction'), ('Loan Repayment', 'Loan Repayment'), ('New Loan', 'Loan'), ('Advance Payment', 'Advance'), ('Advance Repayment', 'Advance Repaid')], max_length=50),
+        ),
+    ]

core/models.py

@@ -187,14 +187,21 @@ class Loan(models.Model):
         return f"{self.worker.name} - {label} - {self.date}"
 
 class PayrollAdjustment(models.Model):
+    # === PayrollAdjustment TYPE_CHOICES - canonical DB value | display label ===
+    # Path A rename (24 Apr 2026): DB values are PRESERVED as-is. Only the
+    # second tuple element (the human label) changes for three types, so
+    # users see shorter labels in tables while every historic row, formula,
+    # constant, test fixture, CSS class, and data-attribute KEEP WORKING
+    # UNCHANGED because they all key off the DB value on the left.
+    # See CLAUDE.md "UI-vs-DB naming drift" section for the full rule.
     TYPE_CHOICES = [
-        ('Bonus', 'Bonus'),
-        ('Overtime', 'Overtime'),
-        ('Deduction', 'Deduction'),
-        ('Loan Repayment', 'Loan Repayment'),
-        ('New Loan', 'New Loan'),
-        ('Advance Payment', 'Advance Payment'),
-        ('Advance Repayment', 'Advance Repayment'),
+        ('Bonus',             'Bonus'),
+        ('Overtime',          'Overtime'),
+        ('Deduction',         'Deduction'),
+        ('Loan Repayment',    'Loan Repayment'),
+        ('New Loan',          'Loan'),
+        ('Advance Payment',   'Advance'),
+        ('Advance Repayment', 'Advance Repaid'),
     ]
 
     worker = models.ForeignKey(Worker, on_delete=models.CASCADE, related_name='adjustments')

core/templates/core/_adjustment_row.html

@@ -34,7 +34,7 @@ Row actions differ by paid status:
     </td>
 
     {# --- Type badge (colour comes from the .badge-type-<slug> CSS class) --- #}
-    <td><span class="badge-type-{{ adj.type|type_slug }}">{{ adj.type }}</span></td>
+    <td><span class="badge-type-{{ adj.type|type_slug }}">{{ adj.get_type_display }}</span></td>
 
     {# --- Amount (sign reflects additive vs deductive) --- #}
     <td class="text-end" style="font-variant-numeric: tabular-nums;">

core/templates/core/payroll_dashboard.html

@@ -367,7 +367,7 @@
                                       data-adj-project="{{ adj.project_id|default:'' }}"
                                       data-adj-worker="{{ adj.worker.name }}">
                                     {% if adj.type == 'Bonus' or adj.type == 'Overtime' or adj.type == 'New Loan' or adj.type == 'Advance Payment' %}+{% else %}-{% endif %}R{{ adj.amount|floatformat:2 }}
-                                    {{ adj.type }}
+                                    {{ adj.get_type_display }}
                                     {% if adj.project %}({{ adj.project.name }}){% endif %}
                                 </span>
                                 {% endfor %}
@@ -451,7 +451,7 @@
                             <td class="align-middle d-none d-lg-table-cell">
                                 {% for adj in record.adjustments.all %}
                                 <span class="badge {% if adj.type == 'Bonus' or adj.type == 'Overtime' or adj.type == 'Loan Repayment' or adj.type == 'Advance Repayment' %}bg-success{% elif adj.type == 'New Loan' or adj.type == 'Advance Payment' %}bg-warning{% else %}bg-danger{% endif %} me-1">
-                                    {{ adj.type }}: R {{ adj.amount|floatformat:2 }}
+                                    {{ adj.get_type_display }}: R {{ adj.amount|floatformat:2 }}
                                 </span>
                                 {% empty %}
                                 <span class="text-muted">-</span>

core/templates/core/work_log_payroll.html

@@ -128,7 +128,7 @@
                     <tbody>
                     {% for adj in adjustments %}
                         <tr>
-                            <td>{{ adj.type }}</td>
+                            <td>{{ adj.get_type_display }}</td>
                             <td><a href="{% url 'worker_detail' adj.worker.id %}" class="text-decoration-none">{{ adj.worker.name }}</a></td>
                             <td class="text-end">R {{ adj.amount|money }}</td>
                             <td>