feat: Add skills feature for tool and chat calling (#351)

sources/skills/AgentSkill.hpp

@@ -0,0 +1,29 @@
+// Copyright (C) 2026 Petr Mironychev
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <QHash>
+#include <QString>
+#include <QStringList>
+
+namespace QodeAssist::Skills {
+
+struct AgentSkill
+{
+    QString name;
+    QString description;
+    QString body;      // Markdown body after the frontmatter
+    QString skillDir;  // absolute path to the skill folder
+    QString rootPath;  // the scan root this skill was found in
+    QString license;
+    QString compatibility;
+    QStringList allowedTools;
+    QHash<QString, QString> metadata;
+    bool enabled = true;
+    bool alwaysOn = false;
+
+    bool isValid() const { return !name.isEmpty(); }
+};
+
+} // namespace QodeAssist::Skills