feat: one card title rule and a motion pass

Every card title now sits first inside its card under a mono registration
plate; chapter titles stay outside, above the plate. Cards rise and unmask
as they enter the reading window, lift on hover and focus, chapters settle
in sequence on arrival and the gantry lane lamps light along the route.
All motion is transform and clip-path, behind reduced-motion.

src/App.vue

@@ -13,6 +13,7 @@ import './styles/title-navigation.css';
 import './styles/wayfinding.css';
 import './styles/route.css';
 import './styles/gantry.css';
+import './styles/cards.css';
 import './styles/print.css';
 
 defineProps<{ inputs: Readonly<ProductionInputs> }>();