add document dele and rebuild faiss index

src/Entity/IngestJob.php

@@ -10,6 +10,7 @@ class IngestJob
 {
     public const TYPE_DOCUMENT       = 'DOCUMENT';
     public const TYPE_GLOBAL_REINDEX = 'GLOBAL_REINDEX';
+
     /**
      * Special job type used when a DocumentVersion is activated.
      * Semantics: always re-ingest the selected version (even if it was previously INDEXED),
@@ -17,6 +18,12 @@ class IngestJob
      */
     public const TYPE_DOCUMENT_VERSION_ACTIVATE = 'DOCUMENT_VERSION_ACTIVATE';
 
+    /**
+     * Job type used when a Document is hard-deleted from DB
+     * and must be removed from index.ndjson + vector index.
+     */
+    public const TYPE_DOCUMENT_DELETE = 'DOCUMENT_DELETE';
+
     public const STATUS_QUEUED    = 'QUEUED';
     public const STATUS_RUNNING   = 'RUNNING';
     public const STATUS_COMPLETED = 'COMPLETED';