feat: SuperAdmin bootstrap, i18n sync fix and AssetAssignment ORM fix

- Fixed AttributeError in User model (added region_code, preferred_language)
- Fixed InvalidRequestError in AssetAssignment (added organization relationship)
- Configured STATIC_DIR for translation sync
- Applied Alembic migrations for user schema updates

backend/app/schemas/admin_security.py

@@ -0,0 +1,26 @@
+from pydantic import BaseModel
+from datetime import datetime
+from typing import Optional, Any, Dict, List
+from app.models.security import ActionStatus
+
+class PendingActionResponse(BaseModel):
+    id: int
+    requester_id: int
+    action_type: str
+    payload: Dict[str, Any]
+    reason: str
+    status: ActionStatus
+    created_at: datetime
+    expires_at: datetime
+
+    class Config:
+        from_attributes = True
+
+class ActionApproveRequest(BaseModel):
+    # Itt akár extra jelszót vagy MFA tokent is kérhetnénk a jövőben
+    comment: Optional[str] = None
+
+class SecurityStatusResponse(BaseModel):
+    total_pending: int
+    critical_logs_last_24h: int
+    emergency_locks_active: int