Add QR title block and content blocks

examples/card/json/card_source.json

@@ -26,6 +26,22 @@
     "html_css": "build/html/style.css"
   },
   "template": "templates/karta-5b.json",
+  "title_block": {
+    "category": "KARTA PRACY · INFORMATYKA",
+    "standard": "ISO 7200",
+    "prepared_by": "Zespół edukacyjny",
+    "prepared_on": "15.07.2026",
+    "checked_by": "—",
+    "approved_by": "—",
+    "url": "https://demo.example.edu/cards/demo-01",
+    "revision": "1",
+    "issued_on": "15.07.2026",
+    "series": "DEMO-01",
+    "document_type": "karta pracy",
+    "tool": "card-layouts",
+    "sheet": "1 / 11",
+    "show_qr": true
+  },
   "front_page_break": false,
   "metric_fill_fields": [
     {