feat: Initialize core application structure including authentication, role-based dashboards, service task management, and integration workflows.

app/Models/ServiceTask.php

@@ -0,0 +1,79 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Spatie\Activitylog\Traits\LogsActivity;
+use Spatie\Activitylog\LogOptions;
+
+class ServiceTask extends Model
+{
+    use LogsActivity;
+
+    public function getActivitylogOptions(): LogOptions
+    {
+        return LogOptions::defaults()
+            ->logOnly(['status', 'completed_at', 'validated_by'])
+            ->logOnlyDirty()
+            ->dontSubmitEmptyLogs();
+    }
+
+    public function state(): \App\States\ServiceTask\ServiceTaskState
+    {
+        return match ($this->status) {
+            \App\Enums\ServiceTaskStatus::Pending => new \App\States\ServiceTask\PendingState($this),
+            \App\Enums\ServiceTaskStatus::InProgress => new \App\States\ServiceTask\InProgressState($this),
+            \App\Enums\ServiceTaskStatus::WaitingValidation => new \App\States\ServiceTask\WaitingValidationState($this),
+            \App\Enums\ServiceTaskStatus::Completed => new \App\States\ServiceTask\CompletedState($this),
+            \App\Enums\ServiceTaskStatus::Rejected => new \App\States\ServiceTask\RejectedState($this),
+            default => throw new \Exception("Unknown state: {$this->status->value}"),
+        };
+    }
+
+    protected $fillable = [
+        'integration_request_id',
+        'service_id',
+        'status',
+        'sla_deadline',
+        'started_at',
+        'completed_at',
+        'validated_by',
+    ];
+
+    protected $casts = [
+        'status' => \App\Enums\ServiceTaskStatus::class,
+        'sla_deadline' => 'datetime',
+        'started_at' => 'datetime',
+        'completed_at' => 'datetime',
+    ];
+
+    public function integrationRequest()
+    {
+        return $this->belongsTo(IntegrationRequest::class);
+    }
+
+    public function service()
+    {
+        return $this->belongsTo(Service::class);
+    }
+
+    public function validator()
+    {
+        return $this->belongsTo(User::class, 'validated_by');
+    }
+
+    public function taskItems()
+    {
+        return $this->hasMany(TaskItem::class);
+    }
+
+    public function comments()
+    {
+        return $this->morphMany(Comment::class, 'commentable');
+    }
+
+    public function attachments()
+    {
+        return $this->hasMany(Attachment::class);
+    }
+}