feat(leads): add Lead Manager module with full admin and consumer endpoints

- Lead model in admin_api with status/priority/source/assigned_to fields
- Admin API: metrics, list, detail, update views at /api/v1/leads/
- Consumer API: public ScheduleCallView at /api/leads/schedule-call/
- RBAC: 'leads' module registered in ALL_MODULES and StaffProfile scopes
- Migration 0003_lead with indexes on status, priority, created_at, email

admin_api/migrations/0003_lead.py

@@ -0,0 +1,53 @@
+# Generated by Django 4.2.21 on 2026-04-07
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('admin_api', '0002_rbac_models'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Lead',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=200)),
+                ('email', models.EmailField(max_length=254)),
+                ('phone', models.CharField(max_length=20)),
+                ('event_type', models.CharField(choices=[('private', 'Private Event'), ('ticketed', 'Ticketed Event'), ('corporate', 'Corporate Event'), ('wedding', 'Wedding'), ('other', 'Other')], default='private', max_length=20)),
+                ('message', models.TextField(blank=True, default='')),
+                ('status', models.CharField(choices=[('new', 'New'), ('contacted', 'Contacted'), ('qualified', 'Qualified'), ('converted', 'Converted'), ('closed', 'Closed')], default='new', max_length=20)),
+                ('source', models.CharField(choices=[('schedule_call', 'Schedule a Call'), ('website', 'Website'), ('manual', 'Manual')], default='schedule_call', max_length=20)),
+                ('priority', models.CharField(choices=[('low', 'Low'), ('medium', 'Medium'), ('high', 'High')], default='medium', max_length=10)),
+                ('assigned_to', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='assigned_leads', to=settings.AUTH_USER_MODEL)),
+                ('notes', models.TextField(blank=True, default='')),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+            ],
+            options={
+                'ordering': ['-created_at'],
+            },
+        ),
+        migrations.AddIndex(
+            model_name='lead',
+            index=models.Index(fields=['status'], name='admin_api_lead_status_idx'),
+        ),
+        migrations.AddIndex(
+            model_name='lead',
+            index=models.Index(fields=['priority'], name='admin_api_lead_priority_idx'),
+        ),
+        migrations.AddIndex(
+            model_name='lead',
+            index=models.Index(fields=['created_at'], name='admin_api_lead_created_idx'),
+        ),
+        migrations.AddIndex(
+            model_name='lead',
+            index=models.Index(fields=['email'], name='admin_api_lead_email_idx'),
+        ),
+    ]