complete story 2.4 with qa test and added a feature disallowing admin from deactivating his own account

app/Models/User.php

@@ -117,6 +117,30 @@ class User extends Authenticatable
         return $this->status === UserStatus::Active;
     }
 
+    /**
+     * Check if user is deactivated.
+     */
+    public function isDeactivated(): bool
+    {
+        return $this->status === UserStatus::Deactivated;
+    }
+
+    /**
+     * Deactivate the user account.
+     */
+    public function deactivate(): void
+    {
+        $this->update(['status' => UserStatus::Deactivated]);
+    }
+
+    /**
+     * Reactivate the user account.
+     */
+    public function reactivate(): void
+    {
+        $this->update(['status' => UserStatus::Active]);
+    }
+
     /**
      * Scope to filter admin users.
      */
@@ -196,4 +220,24 @@ class User extends Authenticatable
     {
         return $this->hasMany(TimelineUpdate::class, 'admin_id');
     }
+
+    /**
+     * Boot the model and register cascade delete event.
+     */
+    protected static function booted(): void
+    {
+        static::deleting(function (User $user) {
+            // Cascade delete consultations
+            $user->consultations()->delete();
+
+            // Cascade delete timelines and their updates
+            $user->timelines->each(function ($timeline) {
+                $timeline->updates()->delete();
+                $timeline->delete();
+            });
+
+            // Cascade delete custom notifications
+            $user->customNotifications()->delete();
+        });
+    }
 }