refactor: Restructure project into sources/tests layout and dissolve PluginLLMCore

sources/widgets/EditorChatButtonHandler.hpp

@@ -0,0 +1,37 @@
+// Copyright (C) 2025-2026 Petr Mironychev
+// SPDX-License-Identifier: GPL-3.0-or-later
+// Additional attribution terms under GPLv3 §7(b) apply — see LICENSE
+
+#pragma once
+
+#include "widgets/EditorChatButton.hpp"
+#include <texteditor/basehoverhandler.h>
+#include <QPointer>
+
+namespace QodeAssist {
+
+class EditorChatButtonHandler : public TextEditor::BaseHoverHandler
+{
+public:
+    explicit EditorChatButtonHandler() = default;
+    ~EditorChatButtonHandler() override;
+
+    void showButton(TextEditor::TextEditorWidget *widget);
+    void hideButton();
+
+signals:
+    void chatButtonClicked(TextEditor::TextEditorWidget *widget);
+
+protected:
+    void identifyMatch(
+        TextEditor::TextEditorWidget *editorWidget, int pos, ReportPriority report) override;
+    void operateTooltip(TextEditor::TextEditorWidget *editorWidget, const QPoint &point) override;
+
+private:
+    QPointer<TextEditor::TextEditorWidget> m_widget;
+    QPoint m_cursorPosition;
+    EditorChatButton *m_chatButton = nullptr;
+    int m_buttonHeight = 0;
+};
+
+} // namespace QodeAssist