It fixes the remaining stale test and keeps the actual N+1 strategy:

* Main ticket index renders scalar agent_name.
* Ticket index still eager-loads user, owner, agent.
* Ticket show comments no longer eager-load fake owner / agent relations.
* Updated the conflicting regression tests.

Modules/Helpdesk/Models/Ticket.php

@@ -8,11 +8,11 @@ use App\Models\User;
 use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
-use Modules\Helpdesk\Database\Factories\TicketFactory;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 use Illuminate\Database\Eloquent\Relations\HasMany;
 use Illuminate\Database\Eloquent\SoftDeletes;
+use Modules\Helpdesk\Database\Factories\TicketFactory;
 
 /**
  * @property int    $id
@@ -23,11 +23,13 @@ use Illuminate\Database\Eloquent\SoftDeletes;
 final class Ticket extends Model
 {
     use HasFactory;
-
     use SoftDeletes;
 
     protected $table = 'helpdesk_tickets';
 
+    /** @var list<string> */
+    protected $with = ['user'];
+
     /** @var list<string> */
     protected $fillable = [
         'reference', 'company_id', 'user_id', 'agent_id', 'status_id', 'board_id', 'priority_id', 'category_id', 'project_id', 'team_id',
@@ -36,9 +38,6 @@ final class Ticket extends Model
         'sla_first_response_breached_at', 'sla_resolution_breached_at', 'public_replies_count', 'time_spent_minutes',
     ];
 
-    /** @var list<string> */
-    protected $with = ['user'];
-
     /** @var array<string, string> */
     protected $casts = [
         'company_id' => 'integer',
@@ -65,6 +64,11 @@ final class Ticket extends Model
         return $this->belongsTo(User::class, 'user_id');
     }
 
+    public function tickets(): Ticket|HasMany
+    {
+        return $this->hasMany(Ticket::class, 'ticket_id');
+    }
+
     /** @return BelongsTo<User, Ticket> */
     public function owner(): BelongsTo
     {
@@ -212,5 +216,4 @@ final class Ticket extends Model
     {
         return TicketFactory::new();
     }
-
 }