One of the earliest cheerleaders for Winston-Salem singer-songwriter Caleb Caudle was not a promoter or club owner — it was the proprietor of an art shop, Teresa Hernandez, whose Pura Vida Worldly Art played host to some of Caudle’s first jaw-dropping gigs in Charlotte. That seems like a million years ago now that Caudle’s become a critically acclaimed national artist. Last March, Rolling Stone premiered Caudle’s breezy “Carolina Ghost.”