More UTF8 message processing fixes, specifically related to tagline/tearline/origin processing

app/Models/Tagline.php

@@ -5,13 +5,17 @@ namespace App\Models;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 
+use App\Casts\UTF8StringOrNull;
+
 class Tagline extends Model
 {
 	//use HasFactory;
 
 	public const UPDATED_AT = NULL;
 
-	protected $fillable = ['value'];
+	protected $casts = [
+		'value' => UTF8StringOrNull::class,
+	];
 
 	public function complete(): string
 	{