Refactor: Auth & Identity System v1.4

- Fix: Resolved SQLAlchemy Mapper error for 'UserVehicle' using string-based relationships.
- Fix: Fixed Postgres Enum case sensitivity issue for 'userrole' (forcing lowercase 'user').
- Fix: Resolved ImportError for 'create_access_token' in security module.
- Feature: Implemented 2-step registration protocol (Lite Register -> KYC Step).
- Data: Added bank-level KYC fields (mother's name, ID/Driver/Boat/Pilot license expiry and categories).
- Business: Applied private fleet isolation (is_transferable=False for individual orgs).
- Docs: Updated Grand Master Book to v1.4 and added Developer Pitfalls guide.

backend/app/models/organization.py

@@ -1,4 +1,3 @@
-# /opt/docker/dev/service_finder/backend/app/models/organization.py
 import enum
 from sqlalchemy import Column, Integer, String, Boolean, Enum, DateTime, ForeignKey
 from sqlalchemy.orm import relationship
@@ -19,22 +18,22 @@ class Organization(Base):
     name = Column(String, nullable=False)
     org_type = Column(Enum(OrgType), default=OrgType.INDIVIDUAL)
     
+    # A flotta technikai tulajdonosa (User)
     owner_id = Column(Integer, ForeignKey("data.users.id"), nullable=True)
     
-    # MASTER BOOK v1.2 kiegészítések
+    # Üzleti szabályok
     is_active = Column(Boolean, default=True)
-    
-    # Csak cégek (nem INDIVIDUAL) esetén adható el a flotta
+    # Privát flotta (INDIVIDUAL) esetén False, cégeknél True
     is_transferable = Column(Boolean, default=True) 
     
-    # Hitelesítési adatok
+    # Verifikáció
     is_verified = Column(Boolean, default=False)
-    # Türelmi idő vagy hitelesítés lejárata
     verification_expires_at = Column(DateTime(timezone=True), nullable=True)
 
     created_at = Column(DateTime(timezone=True), server_default=func.now())
     updated_at = Column(DateTime(timezone=True), onupdate=func.now())
     
     # Kapcsolatok
-    vehicles = relationship("UserVehicle", back_populates="current_org")
-    members = relationship("OrganizationMember", back_populates="organization")
+    vehicles = relationship("Vehicle", back_populates="current_org")
+    members = relationship("OrganizationMember", back_populates="organization")
+    owner = relationship("User", back_populates="owned_organizations")