feat: add manual Paperless ID synchronization for email attachments and update default barcode margins to 7mm.

paperless-backend/src/paperless/paperless.service.ts

@@ -229,6 +229,16 @@ export class PaperlessService {
     return response.data.count > 0;
   }
 
+  async getDocumentIdByChecksum(checksum: string): Promise<number | null> {
+    const response = await this.client.get('/documents/', {
+      params: { checksum__iexact: checksum },
+    });
+    if (response.data.count > 0 && response.data.results?.length > 0) {
+      return response.data.results[0].id as number;
+    }
+    return null;
+  }
+
   /**
    * Prüft, ob eine ASN bereits vergeben ist und wirft einen Fehler, falls ja.
    */