Squashed commit of the following:

commit 6ae625d4fdc11989950ef0678db62fdb52be7c8c
Author: ncoronel <ncoronel@quo.ar>
Date:   Wed Sep 2 09:46:18 2026 -0300

    refactor(tickets): enhance search functionality for tickets by client names and formatted amounts

commit 098e525d32be9cb6487bc01a3d120aa0f2386a15
Author: ncoronel <ncoronel@quo.ar>
Date:   Wed Sep 2 09:09:30 2026 -0300

    fix(tickets): protect referenced purchase items

commit 210db17f2f6a6a4a509297b773a2b5d3e3149a3d
Author: ncoronel <ncoronel@quo.ar>
Date:   Wed Sep 2 08:59:24 2026 -0300

    test(tickets): cover purchase item references

commit 6a004713c4bad622dfa5e26394458925db1cb5a7
Author: ncoronel <ncoronel@quo.ar>
Date:   Wed Sep 2 08:59:02 2026 -0300

    refactor(tickets): reference purchase items directly

app/Domains/Purchase/Models/Purchase.php

@@ -14,6 +14,7 @@ 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\HasManyThrough;
 use Illuminate\Database\Eloquent\Relations\HasOne;
 use Illuminate\Support\Facades\DB;
 
@@ -115,12 +116,15 @@ class Purchase extends Model
         return $this->hasMany(PurchaseItem::class, 'compra_id');
     }
 
-    /**
-     * @return HasMany<Ticket, $this>
-     */
-    public function tickets(): HasMany
+    /** @return HasManyThrough<Ticket, PurchaseItem, $this> */
+    public function tickets(): HasManyThrough
     {
-        return $this->hasMany(Ticket::class, 'source_purchase_id');
+        return $this->hasManyThrough(
+            Ticket::class,
+            PurchaseItem::class,
+            'compra_id',
+            'source_purchase_item_id',
+        );
     }
 
     /** @return BelongsTo<StockReservation, $this> */