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

Plugins/ZShell/Llm/markdownblock.hpp

@@ -0,0 +1,28 @@
+#pragma once
+
+#include <QObject>
+#include <QtQml>
+
+namespace ZShell::llm {
+
+// Marker class exposing the LlmMarkdown block type enum to QML
+// (LlmMarkdown.Type.*). Blocks themselves are value maps produced by
+// MarkdownParser and stored on LlmSegment.
+class LlmMarkdown : public QObject {
+	Q_OBJECT
+	QML_ELEMENT
+	QML_UNCREATABLE("Blocks are produced by LlmSegment")
+
+	public:
+	enum class Type : int {
+		Text = 0, // Paragraph, list, quote, table; "text" is markdown source
+		Heading, // "level" + "text" (markdown source of the content)
+		Code, // "language" + "code"
+		Math // "latex" (display math, without the $$ delimiters)
+	};
+	Q_ENUM(Type)
+
+	explicit LlmMarkdown(QObject* parent = nullptr) : QObject(parent) {}
+};
+
+} // namespace ZShell::llm