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/filament/tenant/pages/mechanic-kpi.blade.php

@@ -30,12 +30,12 @@
     <table class="kpi-table">
         <thead>
             <tr>
-                <th>Mecanic</th>
+                <th>{{ __('Mecanic') }}</th>
                 <th>{{ __('Lucrări') }}</th>
-                <th>Norma ore</th>
-                <th>Real ore</th>
+                <th>{{ __('Norma ore') }}</th>
+                <th>{{ __('Real ore') }}</th>
                 <th>{{ __('Eficiență') }}</th>
-                <th>Venit manopere</th>
+                <th>{{ __('Venit manopere') }}</th>
             </tr>
         </thead>
         <tbody>