Copy full markdown fence for language-tagged code blocks (dataview/query)

src/components/student/lesson-content.tsx

@@ -11,12 +11,22 @@ import Underline from "@tiptap/extension-underline";
 import { Copy, Check } from "lucide-react";
 import { KinescopePlayer } from "@/components/player/kinescope-player";
 
-function CodeBlockStudentView({ node }: { node: { textContent: string } }) {
+function CodeBlockStudentView({
+  node,
+}: {
+  node: { textContent: string; attrs: Record<string, unknown> };
+}) {
   const [copied, setCopied] = useState(false);
 
   const handleCopy = async () => {
+    const lang = (node.attrs?.language as string) || "";
+    // Для блоков с языком (dataview/query/mermaid) копируем ПОЛНЫЙ markdown-забор —
+    // студент вставляет рабочий блок в Obsidian. Для блоков без языка — как есть.
+    const payload = lang
+      ? "```" + lang + "\n" + node.textContent + "\n```"
+      : node.textContent;
     try {
-      await navigator.clipboard.writeText(node.textContent);
+      await navigator.clipboard.writeText(payload);
       setCopied(true);
       setTimeout(() => setCopied(false), 1500);
     } catch {