feat(issues): notificaciones, plantillas de checklist, alertas de vencimiento y reporte desde el mapa

- Notificaciones (DB): asignación de incidencia (IssueAssigned), asignación de tarea
  (IssueTaskAssigned), comentario (IssueCommented) y cambio de estado
  (IssueStatusChanged) a reporter+asignado excluyendo al actor.
- Plantillas de checklist: tabla issue_checklist_templates + modelo, gestor CRUD
  (IssueChecklistManager, ruta projects.issues.checklists) y "Aplicar plantilla" en
  el detalle (alta masiva de tareas).
- Alertas de vencimiento: columna overdue_notified_at + scope overdue, comando
  issues:notify-overdue (programado a diario) que avisa al asignado una sola vez;
  badge "vencidas" en la tabla y resaltado por tarea en el detalle.
- Reporte desde el mapa: botón "Incidencia" en el panel del feature seleccionado →
  formulario con feature pre-vinculado (IssueForm lee ?feature=).

Tests: IssuesEnhancementsTest (7). Suite 57 passing (solo 2 pre-existentes sqlite).

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

app/Livewire/IssueForm.php

@@ -4,6 +4,7 @@ namespace App\Livewire;
 
 use App\Models\Issue;
 use App\Models\Project;
+use App\Notifications\IssueAssignedNotification;
 use App\Notifications\IssueReportedNotification;
 use Illuminate\Support\Facades\Auth;
 use Livewire\Attributes\Layout;
@@ -28,6 +29,7 @@ class IssueForm extends Component
     // Optional context (e.g. when reporting from a map feature)
     public $featureId = null;
     public $inspectionId = null;
+    public $featureName = null;   // shown when the issue is pre-linked to a map element
 
     public function mount(Project $project, ?Issue $issue = null)
     {
@@ -50,6 +52,14 @@ class IssueForm extends Component
             $this->resolutionNotes = $issue->resolution_notes ?? '';
             $this->featureId       = $issue->feature_id;
             $this->inspectionId    = $issue->inspection_id;
+            $this->featureName     = $issue->feature?->name;
+        } elseif ($featureId = request()->integer('feature')) {
+            // Pre-link to a map element when reporting from the project map.
+            $feature = \App\Models\Feature::with('layer.phase')->find($featureId);
+            if ($feature && $feature->layer?->phase?->project_id === $project->id) {
+                $this->featureId   = $feature->id;
+                $this->featureName = $feature->name;
+            }
         }
     }
 
@@ -92,12 +102,18 @@ class IssueForm extends Component
         $payload['resolved_at'] = in_array($this->status, ['resolved', 'closed']) ? now() : null;
 
         if ($this->issue) {
+            $previousAssignee = $this->issue->assigned_to;
             // Don't overwrite an existing resolved date
             if ($this->issue->resolved_at && in_array($this->status, ['resolved', 'closed'])) {
                 unset($payload['resolved_at']);
             }
             $this->issue->update($payload);
             $issue = $this->issue;
+
+            // Notify a newly assigned user (when it changed and isn't the current actor).
+            if ($issue->assigned_to && $issue->assigned_to !== $previousAssignee && $issue->assigned_to !== Auth::id()) {
+                $issue->assignee?->notify(new IssueAssignedNotification($issue));
+            }
         } else {
             $issue = Issue::create(array_merge($payload, [
                 'project_id'  => $this->project->id,