feat(tasks): complete task management system with Kanban, Calendar, notifications

- Add Task model with subtasks, priorities, status transitions, dates, hours
- Add Comment polymorphic model for tasks/issues/projects
- Livewire components: TaskManager (list+filters), TaskForm (modal), TaskDetail, TaskKanban (drag&drop), TaskCalendar (FullCalendar)
- TaskPolicy with permissions (view/create/edit/delete/assign/manage all)
- Notifications: assigned, status change, overdue, comment added
- Daily overdue notification job scheduled
- Dashboard widget unifies IssueTask + Task
- i18n: en/es/fr/ru (393 keys each)
- Routes, navigation, offline sync support
- 101 tests passing, Pint compliant on new files

app/Jobs/NotifyOverdueTasks.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace App\Jobs;
+
+use App\Models\Task;
+use App\Notifications\TaskOverdueNotification;
+use Illuminate\Bus\Queueable;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Foundation\Bus\Dispatchable;
+use Illuminate\Queue\InteractsWithQueue;
+use Illuminate\Queue\SerializesModels;
+
+class NotifyOverdueTasks implements ShouldQueue
+{
+    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;
+
+    public function handle(): void
+    {
+        $overdueTasks = Task::overdue()
+            ->with(['assignee', 'project'])
+            ->get();
+
+        foreach ($overdueTasks as $task) {
+            // Notify assignee
+            if ($task->assignee) {
+                $task->assignee->notify(new TaskOverdueNotification($task));
+            }
+
+            // Notify creator (if different from assignee)
+            if ($task->creator && $task->creator->id !== $task->assignee?->id) {
+                $task->creator->notify(new TaskOverdueNotification($task));
+            }
+        }
+    }
+}