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/integrations.blade.php

@@ -35,7 +35,7 @@
     </style>
 
     <div style="background: #fef3c7; border-left: 4px solid #f59e0b; padding: 12px 16px; border-radius: 6px; margin-bottom: 16px; font-size: 13px;">
-        ℹ️ <b>Status:</b> {{ __('aceste integrări sunt placeholder UI — le configurezi aici, dar implementarea actuală a fiecărui canal e proiect separat.
+        {{ __('ℹ️') }} <b>{{ __('Status:') }}</b> {{ __('aceste integrări sunt placeholder UI — le configurezi aici, dar implementarea actuală a fiecărui canal e proiect separat.
         Pentru moment, valorile salvate sunt accesibile în cod via') }} <code>$tenant->settings['integrations']</code>.
     </div>