i18n(calendar-board): translate mechanic specialization tokens in matrix + legend

Both the row-meta on the master matrix rows and the legend list at
the bottom split specialization by '/' and translate each token via
__(), matching the pattern already used on Reports.php.

'Suspensie / Frâne' → «Подвеска / Тормоза», 'Motor / Cutie viteze' →
«Двигатель / КПП» etc. (all tokens already in the dict).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

resources/views/filament/tenant/pages/calendar.blade.php

@@ -346,7 +346,7 @@
                             $color = $u?->color ?: '#94a3b8';
                             $spec = $u?->specialization ?: '';
                         @endphp
-                        <div class="cv-legend-item"><span class="cv-legend-dot" style="background:{{ $color }}"></span> {{ $name }} @if($spec)· {{ $spec }} @endif</div>
+                        <div class="cv-legend-item"><span class="cv-legend-dot" style="background:{{ $color }}"></span> {{ $name }} @if($spec)· {{ implode(' / ', array_map(fn($p) => __(trim($p)), explode('/', $spec))) }} @endif</div>
                     @endforeach
                 </div>
             </div>