New reusable `text` variant renders a button as inline label text (no bg/border, muted -> foreground, underline-on-hover affordance). Emphasize the actionable word by adding `font-semibold`/`underline` at the call site. Applied to the auxiliary-model "Set to main" (plain), "Change" and "Reset all to main" (bold + underlined) actions, replacing the boxed ghost/outline buttons.