The rebrand renamed many Tailwind color classes vulncheck-blue → truevuln-blue
but left the theme token as --color-vulncheck-blue, so those 115 classes
referenced an undefined color → transparent backgrounds / unstyled text
(tester: the "Save Template" button was invisible until hover; also affected
buttons, links, focus rings, sort arrows app-wide).
Unified everything on truevuln-blue: renamed the @theme token to
--color-truevuln-blue and the remaining 156 vulncheck-blue class usages to
truevuln-blue. Now all 271 usages resolve to one defined token; 0 vulncheck-blue
left.