feat: add openai-compatible model gateway

backend/config/settings/base.py

@@ -21,6 +21,7 @@ INSTALLED_APPS = [
     "apps.tickets",
     "apps.solutions",
     "apps.knowledge",
+    "apps.modelhub",
 ]
 
 MIDDLEWARE = [
@@ -90,3 +91,13 @@ DJANGO_SUPERUSER_EMAIL = os.getenv("DJANGO_SUPERUSER_EMAIL", "admin@example.com"
 
 CELERY_BROKER_URL = os.getenv("CELERY_BROKER_URL", "redis://localhost:6379/0")
 CELERY_RESULT_BACKEND = os.getenv("CELERY_RESULT_BACKEND", "redis://localhost:6379/1")
+
+AI_CREDENTIAL_ENCRYPTION_KEY = os.getenv("AI_CREDENTIAL_ENCRYPTION_KEY", "")
+AI_RUN_RETENTION_DAYS = int(os.getenv("AI_RUN_RETENTION_DAYS", "90"))
+
+CELERY_BEAT_SCHEDULE = {
+    "cleanup-expired-agent-runs": {
+        "task": "apps.agents.tasks.cleanup_expired_agent_runs",
+        "schedule": 86400.0,
+    }
+}