Show the label font on the settings page

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Vunz4VLxAYDBnU5tLciLDC

app/routes/labels.py

@@ -468,4 +468,5 @@ def settings():
                                        tape_printer.DEFAULT_SIZE_MODE),
         dymo_stocks=dymo_sheet.STOCKS,
         dymo_stock=SiteSetting.get('dymo_stock', dymo_sheet.DEFAULT_STOCK),
+        font_info=tape_printer.font_report(),
     )