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

sources/widgets/CompletionHintWidget.cpp

@@ -0,0 +1,68 @@
+// Copyright (C) 2025-2026 Petr Mironychev
+// SPDX-License-Identifier: GPL-3.0-or-later
+// Additional attribution terms under GPLv3 §7(b) apply — see LICENSE
+
+#include "CompletionHintWidget.hpp"
+
+#include <QPainter>
+
+#include <utils/theme/theme.h>
+
+namespace QodeAssist {
+
+CompletionHintWidget::CompletionHintWidget(QWidget *parent, int fontSize)
+    : QWidget(parent)
+    , m_isHovered(false)
+{
+    m_accentColor = Utils::creatorTheme()->color(Utils::Theme::TextColorNormal);
+
+    setMouseTracking(true);
+    setFocusPolicy(Qt::NoFocus);
+    setAttribute(Qt::WA_TranslucentBackground);
+    
+    int triangleSize = qMax(6, fontSize / 2);
+    setFixedSize(triangleSize, triangleSize);
+}
+
+void CompletionHintWidget::paintEvent(QPaintEvent *event)
+{
+    Q_UNUSED(event);
+    
+    QPainter painter(this);
+    painter.setRenderHint(QPainter::Antialiasing);
+
+    QColor triangleColor = m_accentColor;
+    triangleColor.setAlpha(m_isHovered ? 255 : 200);
+    
+    painter.setPen(Qt::NoPen);
+    painter.setBrush(triangleColor);
+    
+    QPolygonF triangle;
+    int w = width();
+    int h = height();
+    
+    triangle << QPointF(0, 0)
+             << QPointF(0, h)
+             << QPointF(w, h / 2.0);
+    
+    painter.drawPolygon(triangle);
+}
+
+void CompletionHintWidget::enterEvent(QEnterEvent *event)
+{
+    Q_UNUSED(event);
+    m_isHovered = true;
+    setCursor(Qt::PointingHandCursor);
+    update();
+}
+
+void CompletionHintWidget::leaveEvent(QEvent *event)
+{
+    Q_UNUSED(event);
+    m_isHovered = false;
+    setCursor(Qt::ArrowCursor);
+    update();
+}
+
+} // namespace QodeAssist
+