feat: i18n, language switcher fix, DataTable improvements, blade translations

- Translation system: lang/es/ PHP files (auth, validation, pagination, passwords)
- Rappasoft vendor translations published (lang/vendor/livewire-tables/es/)
- JSON files synced to 391 keys (EN + ES, full parity)
- APP_LOCALE changed to 'es', users.locale column default changed to 'es'
- Language switcher fixed: JS event + window.location.reload() avoids /livewire/update redirect
- SetLocale middleware fallback uses config('app.locale') instead of hardcoded 'en'
- setSortingPillsEnabled(false) on ProjectTable, CompanyTable, UserTable
- Translated 17 blade views: project-map, template-manager, layer-manager,
  company-management, phase-list, media-manager, reports-dashboard,
  client-projects, layer-upload, project-form, project-map-editor-tab,
  admin/users, projects/media, projects/templates, layouts/client
- Navigation 'Empresas' link uses __('Companies')
- Fixed typo key 'Fases and layers' -> 'Phases and layers'

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/Models/User.php

@@ -20,9 +20,10 @@ class User extends Authenticatable
      * @var list<string>
      */
     protected $fillable = [
-        'name',
-        'email',
-        'password',
+        'name', 'title', 'first_name', 'last_name',
+        'email', 'password',
+        'status', 'valid_from', 'valid_until',
+        'company_id', 'phone', 'address', 'notes',
     ];
 
     /**
@@ -44,9 +45,16 @@ class User extends Authenticatable
     {
         return [
             'email_verified_at' => 'datetime',
-            'password' => 'hashed',
+            'password'          => 'hashed',
+            'valid_from'        => 'date',
+            'valid_until'       => 'date',
         ];
     }
+
+    public function company()
+    {
+        return $this->belongsTo(\App\Models\Company::class);
+    }
     // Many-to-many with projects
     public function projects()
     {