Delete an application group by its unique identifier.

Delete Operations:

• Hard deletes the application group entry from the database
• Deletes all recovery points associated with the application group from the time series table
• Deletes the active discovery entry for the application group
• Deleting an application group that does not exist results in 404.

Important Notes:

• This is a permanent deletion - the application group and all associated data will be removed
• All recovery points (backup discovery entries) for this application group will be deleted
• Active discovery data associated with the application group will be permanently deleted
• The operation cannot be undone

Validation:

• Application group must exist and be accessible by the authenticated user
• Invalid appGroupId format will result in a 400 Bad Request error