feat: añadido cu para avisar al cliente que tiene poco stock

Documentacion/CasosDeUso.org

@@ -68,3 +68,29 @@ UC1 ..> uc4: "include"
 
 #+RESULTS:
 [[file:RegistroFacturas.jpg]]
+
+* Informar pocos productos en stock
+#+begin_src plantuml :file Informe.jpg
+actor "Sistema" <<Programa>> as pr
+
+rectangle "Aviso Stock Restante" {
+ note "<<Invariable>>\n producto->stock <= producto->umbralAvisoStock" as n1
+
+ usecase "Checkear Stock" as uc0
+ usecase "Enviar Informe" as uc1
+
+ usecase "Enviar Mail" as uc2
+ usecase "Mostrar MessageBox" as uc3
+}
+
+pr --> uc0
+uc1 ..> uc0: "extend"
+uc1 ..> uc2: "include"
+uc1 ..> uc3: "include"
+
+n1 .. uc0
+
+#+end_src
+
+#+RESULTS:
+[[file:Informe.jpg]]