feat(labors): trilingual name — add name_en column + Labor::label() helper

- Migration: add nullable `labors.name_en` alongside existing name_ro/
  name_ru.
- Labor model: label(?locale) accessor returns name_{locale} with
  name_ro fallback.
- LaborResource form: expose 3rd 'Nume (EN)' field.
- Table + Select displays now go through label() so options show the
  locale-appropriate name:
    /app/labors table column,
    WorkOrderResource works Select ('[category] name (Nh)'),
    ServiceTemplate items Select,
    ServiceComposer WorkOrderWork snapshot on create.
- Snapshot name saved on wo_works.name at creation reflects the
  current locale; existing rows keep their stored snapshot untouched.

All 306 tests pass.

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

app/Models/Tenant/Labor.php

@@ -22,10 +22,18 @@ class Labor extends Model
     ];
 
     protected $fillable = [
-        'company_id', 'category', 'name_ro', 'name_ru', 'code',
+        'company_id', 'category', 'name_ro', 'name_ru', 'name_en', 'code',
         'hours', 'pricing_mode', 'fixed_price', 'price', 'is_active', 'notes',
     ];
 
+    /** Localised name — prefers name_{locale}, falls back to name_ro. */
+    public function label(?string $locale = null): string
+    {
+        $locale = $locale ?: app()->getLocale();
+        $col = 'name_' . $locale;
+        return $this->{$col} ?: ($this->name_ro ?: '');
+    }
+
     protected $casts = [
         'hours' => 'decimal:2',
         'fixed_price' => 'decimal:2',