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

app/Models/Comment.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+class Comment extends Model
+{
+    protected $fillable = ['user_id', 'content', 'commentable_id', 'commentable_type'];
+
+    public function user()
+    {
+        return $this->belongsTo(User::class);
+    }
+
+    public function commentable()
+    {
+        return $this->morphTo();
+    }
+}