add markdown parsing + latex + tree-sitter highlighting for codeblocks in llm responses

Plugins/ZShell/Llm/markdownparser.hpp

@@ -0,0 +1,25 @@
+#pragma once
+
+#include <QString>
+#include <QVariantList>
+
+namespace ZShell::llm {
+
+// Splits a markdown document into top-level blocks for QML rendering
+// (cmark-gfm AST walk). Inline structure is not flattened; Text and
+// Heading blocks carry markdown source that QML renders with
+// Text.MarkdownText.
+//
+// Block map keys:
+//   "type"     int (LlmMarkdown::Type)
+//   "level"    int (Heading)
+//   "language" QString (Code, lowercased, empty when unknown)
+//   "code"     QString (Code)
+//   "text"     QString (Text/Heading, markdown source)
+//   "latex"    QString (Math, without the $$ delimiters)
+class MarkdownParser {
+	public:
+	[[nodiscard]] static QVariantList parse(const QString& source);
+};
+
+} // namespace ZShell::llm