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/backup.blade.php

@@ -22,7 +22,7 @@
         </p>
         <ul class="bk-list">
             <li>{{ __('Backup periodic (descarcă local sau sincronizează cu cloud)') }}</li>
-            <li>Migrare la alt sistem CRM</li>
+            <li>{{ __('Migrare la alt sistem CRM') }}</li>
             <li>{{ __('Audit / verificări fiscale') }}</li>
             <li>{{ __('Conformitate GDPR (la cererea ștergerii datelor)') }}</li>
         </ul>
@@ -31,12 +31,12 @@
             depozit, furnizori, achiziții, plăți, cheltuieli, salarii, useri, logo + favicon, manifest cu metadata.') }}
         </p>
         <p class="bk-p">
-            <b>Format:</b> {{ __('ZIP cu fișiere JSON (1 per tabel) + media + manifest.json.') }}
+            <b>{{ __('Format:') }}</b> {{ __('ZIP cu fișiere JSON (1 per tabel) + media + manifest.json.') }}
         </p>
 
         <button type="button" class="bk-btn" wire:click="downloadBackup" wire:loading.attr="disabled">
             <span wire:loading.remove wire:target="downloadBackup">{{ __('⬇ Descarcă backup acum') }}</span>
-            <span wire:loading wire:target="downloadBackup">Generez ZIP...</span>
+            <span wire:loading wire:target="downloadBackup">{{ __('Generez ZIP...') }}</span>
         </button>
 
         <p class="bk-p" style="margin-top:24px;font-size:11px;color:#9ca3af;">