feat(i18n): convert 38 hardcoded static labels + safe blade wrap + 226 keys

- Convert all remaining static \$modelLabel/\$pluralModelLabel to getter
  methods with __() (AppointmentResource, WorkOrderResource, MasterResource,
  ServiceTemplateResource, LaborResource, and 33 others)
- Safe blade wrap v2 (37 files, 201 wraps): fixed the regex to not match
  `->`, `=>`, `!<` — previous aggressive pass broke @if directives
- Bulk-translate lowercase model-label keys (programări, fișe lucru,
  tehnicieni, șabloane servicii, norme-ore, etc.) — these were the RO
  strings appearing in page titles/breadcrumbs
- Add human RU/EN for mechanic-kpi (Mecanic/Lucrări/Norma ore/etc.)
  and calendar-board words

Tests 306 green. Blade compiles cleanly.

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

resources/views/emails/service-reminder.blade.php

@@ -25,7 +25,7 @@
 
 <table role="presentation" width="100%" cellpadding="0" cellspacing="0" style="margin:16px 0;border:1px solid #e5e7eb;border-radius:8px;">
     <tr><td style="padding:14px;">
-        <div style="font-size:11px;text-transform:uppercase;color:#6b7280;letter-spacing:.5px;">Vehicul</div>
+        <div style="font-size:11px;text-transform:uppercase;color:#6b7280;letter-spacing:.5px;">{{ __('Vehicul') }}</div>
         <div style="font-size:16px;font-weight:700;margin-top:4px;">
             {{ $vehicle->make }} {{ $vehicle->model }} {{ $vehicle->year ?? '' }}
             @if ($vehicle->plate) <span style="color:{{ $themeColor }};">[{{ $vehicle->plate }}]</span> @endif