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>

app/Filament/Tenant/Pages/CalendarBoard.php

@@ -169,7 +169,9 @@ class CalendarBoard extends Page
                     'id' => $u->id,
                     'name' => $u->name,
                     'color' => $u->color ?: '#3b82f6',
-                    'meta' => $u->specialization ?: ('8' . __('h/zi')),
+                    'meta' => $u->specialization
+                        ? implode(' / ', array_map(fn ($p) => __(trim($p)), explode('/', $u->specialization)))
+                        : ('8' . __('h/zi')),
                     'capacity_hours' => 8.0,
                 ])->all();
             // Always include "Fără maistru" row at the bottom