CLI should explicitly inform when tenant is selected from configuration file

[juan-malbeclabs]

The CLI should clearly indicate when the tenant is being selected automatically based on the local configuration file.

Currently, when no tenant is explicitly provided via flag or argument, the CLI resolves it from the config, but this behavior is not visible to the user.

Proposed improvement:

• When the tenant is resolved from the configuration file, print a clear message such as:
  Using tenant '<tenant_name>' from configuration file.
• This should help avoid confusion and make execution context explicit.

Expected outcome:

• Better transparency
• Easier debugging
• Clearer execution context for users