The edit command allows names that are all numbers

[autumn-sonata]

The application allows the name of clients to only be decimal numbers:

It is unlikely that a name will have numerical values in them, given they are not nicknames, and given the context of this application being a financial advisor planner.

Further internal checking can be done to prevent such behaviour. Taken from person/Name.java:

The VALIDATION_REGEX used is alphanumeric, and therefore the application accepts names that are only numbers.