fix(admin): dashboard country-chart blade parse error

@json() with a multi-line arrow function whose body is an array literal
confuses Blade's directive parser — it reads the inner '[' as an
unmatched bracket and bails out with "Unclosed '[' on line 744 does
not match ')'". Precompute the array in a plain @php block and hand
the already-evaluated collection to @json() instead.

The bug has been dormant because the compiled view was cached. It
surfaced the moment the view cache got cleared.

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>

resources/views/admin/dashboard.blade.php

@@ -741,12 +741,21 @@ new Chart(document.getElementById('typeChart'), {
 
 // ── Country Chart ───────────────────────────────────────────────
 @if($viewsByCountry->isNotEmpty())
-(function() {
-    const countryData = @json($viewsByCountry->map(fn($r) => [
+@php
+    // Blade's @json() parser can't handle a multi-line arrow function with
+    // a `[` array literal inside its body — the directive reads until the
+    // closing paren and sees the inner `[` as an unmatched bracket. Build
+    // the array in PHP first, then hand the plain variable to @json().
+    $countryChartData = $viewsByCountry->map(function ($r) {
+        return [
             'country'      => $r->country,
             'country_name' => $r->country_name ?? \App\Data\Countries::name($r->country),
             'total'        => $r->total,
-    ])->values());
+        ];
+    })->values();
+@endphp
+(function() {
+    const countryData = @json($countryChartData);
     const labels = countryData.map(r => r.country_name || r.country || '');
     const values = countryData.map(r => r.total);
     const maxVal = Math.max(...values);