[Bug] Inconsistency in Namespace usage

[fbxai]

What are you really trying to do?

When using the namespace flag --namespace, the format is inconsistent when creating or looking it up.

Describe the bug

Temporal associates a namespace with its account ID, as highlighted in the docs: <namespace>.<account> ref

This means that I use 1 string to create a namespace, but another to look it up.

Minimal Reproduction

Given a logged in user with account ID of f45a2

1. Create a namespace: tcld namespace create --namespace accounting-production --region us-east-1 --auth-method api_key
2. Try to look it up: tcld namespace get --namespace account-production (it fails)
3. Observe the correct way to be: tcld namespace get --namespace account-production.f45a2

Environment/Versions

All tcld versions do this

Additional context

Unless I'm mistaken, the tcld CLI doesn't allow you to switch between accounts (like gcloud config would). Thus the only option is for a user to see what account they are logged in with tcld account get - Asking for the account ID associated with the current session is thus both painful and unnecessary.

[fbxai]

side note: would be great if tcld account get would actually return the account ID, especially when the protobuf shows it: https://github.com/temporalio/cloud-api/blob/main/temporal/api/cloud/account/v1/message.proto#L36