feat: add archiveBox and archiveFolder fields to Document

Maps cols 1 (Box) and 2 (Mappe) from the ODS to the Document entity.
These are physical archival location identifiers needed to locate
original documents in the physical archive.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/src/main/java/org/raddatz/familienarchiv/model/Document.java

@@ -55,6 +55,13 @@ public class Document {
     @Column(name = "meta_document_location")
     private String documentLocation;
 
+    // Physischer Archivstandort (aus ODS-Import)
+    @Column(name = "archive_box")
+    private String archiveBox;
+
+    @Column(name = "archive_folder")
+    private String archiveFolder;
+
     @Column(columnDefinition = "TEXT")
     private String transcription;
 

backend/src/main/resources/db/migration/V4__add_archive_fields_to_documents.sql

@@ -0,0 +1,2 @@
+ALTER TABLE documents ADD COLUMN archive_box    VARCHAR(255);
+ALTER TABLE documents ADD COLUMN archive_folder VARCHAR(255);