extensions-make-slug-unique.diff

diff --git a/src/Entity/VinylMix.php b/src/Entity/VinylMix.php
index 36de937..06e0e18 100644
--- a/src/Entity/VinylMix.php
+++ b/src/Entity/VinylMix.php
@@ -32,7 +32,7 @@ class VinylMix
     #[ORM\Column]
     private int $votes = 0;
 
-    #[ORM\Column(length: 100)]
+    #[ORM\Column(length: 100, unique: true)]
     private ?string $slug = null;
 
     public function getId(): ?int