object‑permission–driven server access; agent‑managed account provisioning with presence reporting

app/apps/servers/migrations/0004_server_account.py

@@ -0,0 +1,59 @@
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+import django.utils.timezone
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("servers", "0003_agent_ca"),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="ServerAccount",
+            fields=[
+                ("id", models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name="ID")),
+                ("system_username", models.CharField(max_length=128)),
+                ("is_present", models.BooleanField(db_index=True, default=False)),
+                ("last_synced_at", models.DateTimeField(default=django.utils.timezone.now, editable=False)),
+                ("created_at", models.DateTimeField(default=django.utils.timezone.now, editable=False)),
+                ("updated_at", models.DateTimeField(auto_now=True)),
+                (
+                    "server",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="accounts",
+                        to="servers.server",
+                    ),
+                ),
+                (
+                    "user",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="server_accounts",
+                        to=settings.AUTH_USER_MODEL,
+                    ),
+                ),
+            ],
+            options={
+                "verbose_name": "Server account",
+                "verbose_name_plural": "Server accounts",
+                "ordering": ["server_id", "user_id"],
+            },
+        ),
+        migrations.AddConstraint(
+            model_name="serveraccount",
+            constraint=models.UniqueConstraint(fields=("server", "user"), name="unique_server_account"),
+        ),
+        migrations.AddIndex(
+            model_name="serveraccount",
+            index=models.Index(fields=["server", "user"], name="servers_account_user_idx"),
+        ),
+        migrations.AddIndex(
+            model_name="serveraccount",
+            index=models.Index(fields=["server", "is_present"], name="servers_account_present_idx"),
+        ),
+    ]