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)

app/Http/Controllers/Api/StatsController.php

@@ -4,11 +4,33 @@ namespace App\Http\Controllers\Api;
 
 use App\Http\Controllers\Controller;
 use App\Models\Search;
+use App\Models\Station;
+use App\Models\StationPrice;
+use Carbon\CarbonImmutable;
 use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Cache;
 
 class StatsController extends Controller
 {
+    public function live(): JsonResponse
+    {
+        $payload = Cache::remember('api:stats:live', now()->addMinutes(5), function (): array {
+            $stationCount = Station::query()
+                ->where('permanent_closure', false)
+                ->count();
+
+            $latestPriceAt = StationPrice::query()->max('recorded_at');
+
+            return [
+                'station_count' => $stationCount,
+                'latest_price_at' => $latestPriceAt ? CarbonImmutable::parse($latestPriceAt)->toIso8601String() : null,
+            ];
+        });
+
+        return response()->json($payload);
+    }
+
     public function searches(Request $request): JsonResponse
     {
         $period = $request->input('period', 'week');