<?php
namespace Modules\AI\Models;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Relations\MorphTo;
final class AIKnowledgeSource extends Model
{
    protected $fillable=['name','source_kind','source_type','source_id','content','checksum','metadata','status','chunk_count','indexed_at'];
    protected $casts=['metadata'=>'array','indexed_at'=>'datetime'];
    public function source(): MorphTo { return $this->morphTo(); }
    public function chunks(): HasMany { return $this->hasMany(AIKnowledgeChunk::class); }
}