Add enrichXrefDisplay hook and xkey_ext to value edit template

- LibertyContent: add enrichXrefDisplay() no-op hook; call it in edit_xref.php
  so packages can inject display-only data (e.g. component title) into xrefInfo
- edit_xref_value_item.tpl: add Notes (xkey_ext) field alongside Value (xkey)

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

1 files changed, 2 insertions, 0 deletions

diff --git a/edit_xref.php b/edit_xref.php
index b58044a..bd4d161 100644
--- a/edit_xref.php
+++ b/edit_xref.php
@@ -49,6 +49,8 @@ if( !empty( $_REQUEST['fSaveXref'] ) ) {
 	$xrefInfo = $gContent->mInfo['xref_store']['data'] ?? [];
 }
 
+$gContent->enrichXrefDisplay( $xrefInfo );
+
 $gBitSmarty->assign( 'gContent', $gContent );
 $gBitSmarty->assign( 'xrefInfo', $xrefInfo );
 $gBitSmarty->assign( 'errors', $gContent->mErrors );