harden document delete and rebuild faiss index

src/Entity/Document.php

@@ -1,6 +1,5 @@
 <?php
 
-
 namespace App\Entity;
 
 use Doctrine\ORM\Mapping as ORM;
@@ -31,10 +30,18 @@ class Document
     #[ORM\Column]
     private \DateTimeImmutable $createdAt;
 
-    #[ORM\OneToMany(mappedBy: 'document', targetEntity: DocumentVersion::class, cascade: ['persist'], orphanRemoval: true)]
+    // 🔥 REMOVE ergänzt
+    #[ORM\OneToMany(
+        mappedBy: 'document',
+        targetEntity: DocumentVersion::class,
+        cascade: ['persist', 'remove'],
+        orphanRemoval: true
+    )]
     private Collection $versions;
 
+    // 🔥 onDelete ergänzt
     #[ORM\ManyToOne]
+    #[ORM\JoinColumn(nullable: true, onDelete: 'SET NULL')]
     private ?DocumentVersion $currentVersion = null;
 
     public function __construct()
@@ -65,7 +72,6 @@ class Document
         return $this;
     }
 
-
     public function getStatus(): string
     {
         return $this->status;
@@ -94,8 +100,10 @@ class Document
 
     public function addVersion(DocumentVersion $version): void
     {
-        $this->versions->add($version);
-        $version->setDocument($this);
+        if (!$this->versions->contains($version)) {
+            $this->versions->add($version);
+            $version->setDocument($this);
+        }
     }
 
     public function setCurrentVersion(?DocumentVersion $version): void