Initial commit: abyssVpn project

- Tauri desktop app (apps/desktop)
- Python Django API service (services/api)
- Deployment scripts and docs

services/api/vpn/models.py

@@ -0,0 +1,35 @@
+from django.db import models
+
+from accounts.models import User
+
+
+class Device(models.Model):
+    STATUS_ACTIVE = "active"
+    STATUS_REVOKED = "revoked"
+
+    user = models.ForeignKey(User, on_delete=models.CASCADE, related_name="devices")
+    device_name = models.CharField(max_length=128)
+    device_fingerprint = models.CharField(max_length=256, blank=True)
+    netmaker_node_id = models.CharField(max_length=128, blank=True)
+    status = models.CharField(max_length=16, default=STATUS_ACTIVE)
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    def __str__(self) -> str:
+        return f"{self.user_id}:{self.device_name}"
+
+    class Meta:
+        constraints = [
+            models.UniqueConstraint(
+                fields=["user", "device_fingerprint"],
+                name="unique_user_device_fingerprint",
+            )
+        ]
+
+
+class VpnLog(models.Model):
+    user = models.ForeignKey(User, on_delete=models.CASCADE)
+    device = models.ForeignKey(Device, on_delete=models.SET_NULL, null=True, blank=True)
+    action = models.CharField(max_length=64)
+    detail = models.JSONField(default=dict, blank=True)
+    created_at = models.DateTimeField(auto_now_add=True)