A documentation section has been added to the admin panel.

app/application/app/Models/Documentation.php

@@ -0,0 +1,65 @@
+<?php declare(strict_types=1);
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\HasOne;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+final class Documentation extends Model
+{
+    use HasFactory, SoftDeletes;
+
+    protected $table = 'documentation';
+
+    /**
+     * The model's default values for attributes.
+     *
+     * @var array
+     */
+    protected $attributes = [
+        'sort'      => 100,
+        'is_public' => true,
+    ];
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array
+     */
+    protected $fillable = [
+        'slug',
+        'is_public',
+        'category_id',
+    ];
+
+    /**
+     * Get the attributes that should be cast.
+     *
+     * @return array<string, string>
+     */
+    protected function casts(): array
+    {
+        return [
+            'is_public' => 'boolean',
+        ];
+    }
+
+    public function category(): BelongsTo
+    {
+        return $this->belongsTo(DocumentationCategory::class, 'category_id', 'id');
+    }
+
+    public function contents(): HasMany
+    {
+        return $this->hasMany(DocumentationContent::class, 'documentation_id', 'id');
+    }
+
+    public function content(): HasOne
+    {
+        return $this->hasOne(DocumentationContent::class, 'documentation_id', 'id');
+    }
+}