Refactor update procedures: rename Guid to Id

Renamed all `Guid` properties and parameters to `Id` in update procedure interfaces, records, and handlers. This clarifies that the identifier is a numeric ID, not a GUID, and improves consistency across the codebase. All related method signatures and usages have been updated accordingly.

src/ReC.Application/Endpoints/Commands/UpdateEndpointProcedure.cs

@@ -8,12 +8,12 @@ public record UpdateEndpointProcedure : IUpdateProcedure
     public string? Description { get; set; }
     public string? Uri { get; set; }
 
-    public UpdateObjectProcedure ToObjectProcedure(long guid, string? changedWho = null)
+    public UpdateObjectProcedure ToObjectProcedure(long id, string? changedWho = null)
     {
         return new UpdateObjectProcedure
         {
             Entity = "ENDPOINT",
-            Guid = guid,
+            Id = id,
             Endpoint = this
         }.ChangedBy(changedWho);
     }