Cambios a las 3 bases Model mapper repo para que funcionen a partir de las clases heredando todos los metodos comunes

src/ArquitectureLayer/Model.py

@@ -0,0 +1,57 @@
+# src\ArquitectureLayer\Model.py
+
+from sqlalchemy import Column, DateTime, String, Integer, Text, func
+from sqlalchemy.ext.declarative import declared_attr, as_declarative
+from datetime import datetime
+
+@as_declarative()
+class Model_base:
+    __abstract__ = True
+
+    @declared_attr
+    def sys_created_at(cls):
+        return Column(DateTime(timezone=True), server_default=func.now(), nullable=False)
+
+    @declared_attr
+    def sys_created_by(cls):
+        return Column(String, nullable=True)
+
+    @declared_attr
+    def sys_updated_at(cls):
+        return Column(DateTime(timezone=True), onupdate=func.now(), nullable=True)
+
+    @declared_attr
+    def sys_updated_by(cls):
+        return Column(String, nullable=True)
+
+    @declared_attr
+    def sys_version(cls):
+        return Column(Integer, default=1, nullable=False)
+
+    @declared_attr
+    def sys_notes(cls):
+        return Column(Text, nullable=True)
+
+    @declared_attr
+    def sys_deleted_at(cls):
+        return Column(DateTime(timezone=True), nullable=True)
+
+    def __repr__(self):
+        id_val = getattr(self, "id", None)
+        return f"<{self.__class__.__name__} id={id_val}>"
+
+    def __str__(self):
+        cls = self.__class__.__name__
+        id_val = getattr(self, "id", None)
+        return f"{cls}(id={id_val})"
+
+    def __json__(self) -> dict:
+        """Devuelve una representación JSON serializable (dict plano)."""
+        out = {}
+        for attr in self.__table__.columns:
+            val = getattr(self, attr.name)
+            if isinstance(val, datetime):
+                out[attr.name] = val.isoformat()
+            else:
+                out[attr.name] = val
+        return out