feat: add AirShelf core implementation

core/backend/apps/common/__init__.py

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+

core/backend/apps/common/api.py

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+from rest_framework.exceptions import PermissionDenied
+
+
+def get_current_team(user):
+    membership = user.team_memberships.filter(status="active").select_related("team").first()
+    if not membership:
+        raise PermissionDenied("current user has no active team")
+    return membership.team
+
+
+class TeamScopedViewSetMixin:
+    team_field = "team"
+
+    def get_team(self):
+        return get_current_team(self.request.user)
+
+    def get_queryset(self):
+        queryset = super().get_queryset()
+        return queryset.filter(**{self.team_field: self.get_team()})
+
+    def perform_create(self, serializer):
+        serializer.save(team=self.get_team(), created_by=self.request.user)
+

core/backend/apps/common/apps.py

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+from django.apps import AppConfig
+
+
+class CommonConfig(AppConfig):
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "apps.common"
+

core/backend/apps/common/management/__init__.py

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+

core/backend/apps/common/management/commands/__init__.py

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+

core/backend/apps/common/management/commands/bootstrap_volcano_models.py

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+from django.core.management.base import BaseCommand
+
+from apps.ai.catalog import VOLCANO_MODELS, VOLCANO_PROVIDER
+from apps.ai.models import ModelConfig, ModelProvider
+
+
+class Command(BaseCommand):
+    help = "Create or update default Volcano model provider and model configs."
+
+    def handle(self, *args, **options):
+        provider, _ = ModelProvider.objects.update_or_create(
+            name=VOLCANO_PROVIDER["name"],
+            defaults={
+                "display_name": VOLCANO_PROVIDER["display_name"],
+                "base_url": VOLCANO_PROVIDER["base_url"],
+                "status": ModelProvider.Status.ACTIVE,
+            },
+        )
+
+        count = 0
+        for item in VOLCANO_MODELS:
+            ModelConfig.objects.update_or_create(
+                provider=provider,
+                name=item["name"],
+                capability=item["capability"],
+                defaults={
+                    "display_name": item["display_name"],
+                    "endpoint": item["endpoint"],
+                    "status": ModelConfig.Status.ACTIVE,
+                    "metadata": item["metadata"],
+                },
+            )
+            count += 1
+
+        self.stdout.write(self.style.SUCCESS(f"Bootstrapped {count} Volcano model configs."))
+

core/backend/apps/common/migrations/__init__.py

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+

core/backend/apps/common/models.py

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+import uuid
+
+from django.db import models
+
+
+class UUIDModel(models.Model):
+    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
+
+    class Meta:
+        abstract = True
+
+
+class TimeStampedModel(UUIDModel):
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        abstract = True
+
+
+class TeamOwnedModel(TimeStampedModel):
+    team = models.ForeignKey("accounts.Team", on_delete=models.CASCADE, related_name="%(class)s_set")
+    created_by = models.ForeignKey(
+        "accounts.User",
+        on_delete=models.SET_NULL,
+        null=True,
+        blank=True,
+        related_name="created_%(class)s_set",
+    )
+
+    class Meta:
+        abstract = True
+

core/backend/apps/common/views.py

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+from django.http import JsonResponse
+
+
+def health_check(request):
+    return JsonResponse({"status": "ok", "service": "airshelf-backend"})
+