feat(map): filtros por columna en cabecera (elementos e inspecciones)

Usa la cabecera secundaria de Rappasoft (setSecondaryHeaderEnabled + secondaryHeaderFilter):
- Elementos: Elemento (texto), Capa (select), Fase (select).
- Inspecciones: Fecha (date), Elemento (texto), Resultado (select), Usuario (select);
  Plantilla sin filtro.

Tests: MapTablesTest amplía con filtro de capa funcional. Suite 75 passing.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

tests/Feature/MapTablesTest.php

@@ -60,6 +60,26 @@ class MapTablesTest extends TestCase
             ->assertForbidden();
     }
 
+    public function test_feature_table_layer_filter(): void
+    {
+        // Segunda capa con otro elemento en la misma fase.
+        $phaseId = $this->feature->layer->phase_id;
+        $layerB = Layer::create(['project_id' => $this->project->id, 'phase_id' => $phaseId, 'name' => 'Capa B', 'color' => '#222', 'uploaded_by' => $this->user->id]);
+        Feature::create([
+            'layer_id' => $layerB->id, 'name' => 'Viga 7',
+            'geometry' => ['type' => 'Point', 'coordinates' => [-3.0, 40.0]],
+            'progress' => 0, 'status' => 'planned',
+        ]);
+
+        Livewire::actingAs($this->user)
+            ->test(FeatureTable::class, ['projectId' => $this->project->id])
+            ->assertSee('Pilar 12')
+            ->assertSee('Viga 7')
+            ->set('filterComponents.layer', (string) $this->feature->layer_id)
+            ->assertSee('Pilar 12')
+            ->assertDontSee('Viga 7');
+    }
+
     public function test_inspection_table_lists_project_inspections(): void
     {
         Inspection::create([