Standardise xref templates to _item naming; add value and group templates

- Rename all view_xref_*_record.tpl → view_xref_*_item.tpl throughout
- LibertyContent: getXrefRecordTemplate/ListTemplate/EditTemplate use _item
  naming with three-level fallback (pkg/guid subdir → pkg root → liberty);
  getXrefRecordTemplate falls back to text_item if template file not found;
  getXrefEditTemplate checks liberty _item before generic edit_xref.tpl
- list_xref.tpl: assign _rowTpl before method call to avoid Smarty section
  variable resolution issue inside PHP method call arguments
- New templates: view_xref_value_item.tpl, edit_xref_value_item.tpl for
  simple numeric xref items (xkey field, not data)

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

1 files changed, 1 insertions, 0 deletions

diff --git a/templates/view_xref_image_item.tpl b/templates/view_xref_image_item.tpl
new file mode 100644
index 0000000..9effe61
--- /dev/null
+++ b/templates/view_xref_image_item.tpl
@@ -0,0 +1 @@
+{include file="bitpackage:contact/view_xref_image_record.tpl"}