feat: expand station cards with detailed information and add live statistics endpoint

- Add `/stats/live` endpoint returning station count and latest price timestamp with 5-minute cache
- Transform StationCard into expandable component with click/keyboard interaction showing full details
- Display brand label, badges (24h/Supermarket/Motorway), fuel types, amenities, opening hours, and price delta vs average
- Add brand filter dropdown to StationList with dynamic brand extraction from results
- Calculate and display price comparison against filtered stations average
- Redesign map markers to simpler price display; move directions link to popup alongside station details
- Add "locate-me" button to SearchBar for geolocation trigger
- Show "Live" indicator with station count and last-update time on homepage hero
- Remove standalone directions link from marker HTML; consolidate in popup with click propagation handling
- Persist `avgPence` calculation across StationList and pass to cards for delta display
- Add `@iconify-json/lucide` dev dependency and register collection on app mount
- Stop click propagation on card action buttons (directions, remove)

resources/js/app.js

@@ -1,6 +1,10 @@
 import 'iconify-icon'
+import { addCollection } from 'iconify-icon'
+import lucideIcons from '@iconify-json/lucide/icons.json'
 import { createApp } from 'vue'
 import App from './App.vue'
 import router from './router/index.js'
 
+addCollection(lucideIcons)
+
 createApp(App).use(router).mount('#app')