In a sunlit Galway studio, Colin Burke is considering his next move. The Irish knitwear designer, celebrated for his sculptural, hand-crafted pieces, has built a brand synonymous with slow fashion and artisanal excellence. But as demand for his intricate designs swells beyond the capacity of his local network of master hand-knitters, he faces an uneasy decision: To scale up means looking beyond Ireland for hand-knitters.   “Building my network of knitters was definitely my biggest challenge to date. Now, thankfully, I’m at a point where it works. It’s taken a long time to build up the network of knitters I have,”…