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

sources/widgets/CompletionHintWidget.hpp

@@ -0,0 +1,29 @@
+// 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 <QWidget>
+
+namespace QodeAssist {
+
+class CompletionHintWidget : public QWidget
+{
+    Q_OBJECT
+public:
+    explicit CompletionHintWidget(QWidget *parent = nullptr, int fontSize = 12);
+    ~CompletionHintWidget() override = default;
+
+protected:
+    void paintEvent(QPaintEvent *event) override;
+    void enterEvent(QEnterEvent *event) override;
+    void leaveEvent(QEvent *event) override;
+
+private:
+    QColor m_accentColor;
+    bool m_isHovered;
+};
+
+} // namespace QodeAssist
+