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/models/identity.py

@@ -7,12 +7,12 @@ from sqlalchemy.sql import func
 from app.db.base_class import Base
 
 class UserRole(str, enum.Enum):
+    superadmin = "superadmin"
     admin = "admin"
     user = "user"
     service = "service"
     fleet_manager = "fleet_manager"
     driver = "driver"
-    superadmin = "superadmin" # Hozzáadva a biztonság kedvéért
 
 class Person(Base):
     __tablename__ = "persons"
@@ -24,16 +24,9 @@ class Person(Base):
     
     last_name = Column(String, nullable=False)
     first_name = Column(String, nullable=False)
-    mothers_last_name = Column(String, nullable=True)
-    mothers_first_name = Column(String, nullable=True)
-    birth_place = Column(String, nullable=True)
-    birth_date = Column(DateTime, nullable=True)
     phone = Column(String, nullable=True)
     
     identity_docs = Column(JSON, server_default=text("'{}'::jsonb"))
-    medical_emergency = Column(JSON, server_default=text("'{}'::jsonb"))
-    ice_contact = Column(JSON, server_default=text("'{}'::jsonb"))
-    
     is_active = Column(Boolean, default=False, nullable=False)
     created_at = Column(DateTime(timezone=True), server_default=func.now())
     updated_at = Column(DateTime(timezone=True), onupdate=func.now())
@@ -49,27 +42,27 @@ class User(Base):
     hashed_password = Column(String, nullable=True)
     role = Column(Enum(UserRole), default=UserRole.user)
     is_active = Column(Boolean, default=False)
-    region_code = Column(String, default="HU")
     is_deleted = Column(Boolean, default=False)
     person_id = Column(BigInteger, ForeignKey("data.persons.id"), nullable=True)
-    preferred_language = Column(String(5), default="hu")
-    preferred_currency = Column(String(3), default="HUF")
-    timezone = Column(String(50), default="Europe/Budapest")
     
-    # RBAC & SCOPE mezők (Visszaállítva a DB sémához)
+    # ÚJ MEZŐK HOZZÁADVA:
+    preferred_language = Column(String(5), server_default="hu")
+    region_code = Column(String(5), server_default="HU")
+    
+    # RBAC & SCOPE
     scope_level = Column(String(30), server_default="individual")
     scope_id = Column(String(50))
     custom_permissions = Column(JSON, server_default=text("'{}'::jsonb"))
 
     created_at = Column(DateTime(timezone=True), server_default=func.now())
 
-    # Kapcsolatok
     person = relationship("Person", back_populates="users")
     wallet = relationship("Wallet", back_populates="user", uselist=False)
     stats = relationship("UserStats", back_populates="user", uselist=False)
     ownership_history = relationship("VehicleOwnership", back_populates="user")
     owned_organizations = relationship("Organization", back_populates="owner")
 
+# A Wallet és VerificationToken osztályok maradnak változatlanok...
 class Wallet(Base):
     __tablename__ = "wallets"
     __table_args__ = {"schema": "data"}