Release version 1.3.1: Updated backend models and endpoints

backend/app/models/ticket.py

@@ -119,6 +119,12 @@ class Ticket(Base):
         foreign_keys=[assigned_to], 
         back_populates="assigned_tickets"
     )
+
+    comments: Mapped[list["TicketComment"]] = relationship(
+        "TicketComment",
+        back_populates="ticket",
+        cascade="all, delete-orphan"
+    )
     
     # ✅ AÑADIDOS: Constraints según schema.sql
     __table_args__ = (