feat(external): add index to ExternalAccess for project and is_active

Improves query performance on project and is_active lookups.

src/external/migrations/0002_externalaccess_external_ac_project_d7e6b3_idx.py

@@ -0,0 +1,19 @@
+# Generated by Django 6.0.6 on 2026-06-28 10:14
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("external", "0001_initial"),
+        ("projects", "0002_projectmember_project_mem_user_id_6b0bb0_idx"),
+    ]
+
+    operations = [
+        migrations.AddIndex(
+            model_name="externalaccess",
+            index=models.Index(
+                fields=["project", "is_active"], name="external_ac_project_d7e6b3_idx"
+            ),
+        ),
+    ]

src/external/models.py

@@ -31,6 +31,9 @@ class ExternalAccess(models.Model):
         db_table = "external_access"
         verbose_name = "External Access"
         verbose_name_plural = "External Accesses"
+        indexes = [
+            models.Index(fields=["project", "is_active"]),
+        ]
 
     def __str__(self):
         return f"ExternalAccess for {self.project.name}"