Add English and Russian ChatGUI interface translations

tools/chatgui/src/videoplayer_window.cpp

@@ -1,3 +1,4 @@
+#include <QCoreApplication>
 #include "videoplayer_window.h"
 #include "videoplayer_engine.h"
 #include "../../lib/debug_config.h"
@@ -76,7 +77,7 @@ public:
 VideoPlayerWindow::VideoPlayerWindow(QWidget* parent)
     : QWidget(parent, Qt::Window | Qt::FramelessWindowHint)
 {
-    setWindowTitle(QStringLiteral("Video"));
+    setWindowTitle(QCoreApplication::translate("ChatGui", "Video"));
     setFocusPolicy(Qt::StrongFocus);
     setMouseTracking(true);
 
@@ -99,7 +100,7 @@ VideoPlayerWindow::VideoPlayerWindow(QWidget* parent)
         "QSlider::handle:horizontal { width: 12px; margin: -4px 0; background: white; border-radius: 6px; }");
 
     m_playBtn = new QPushButton(QStringLiteral("⏸"), m_controls);
-    m_playBtn->setToolTip(QStringLiteral("Пауза"));
+    m_playBtn->setToolTip(QCoreApplication::translate("ChatGui", "Pause"));
     m_playBtn->setFixedWidth(40);
     m_slider = new QSlider(Qt::Horizontal, m_controls);
     m_slider->setStyle(new SeekSliderStyle());
@@ -115,7 +116,7 @@ VideoPlayerWindow::VideoPlayerWindow(QWidget* parent)
 
     /* крестик закрытия — отдельно, справа вверху */
     m_closeBtn = new QPushButton(QStringLiteral("✕"), this);
-    m_closeBtn->setToolTip(QStringLiteral("Закрыть"));
+    m_closeBtn->setToolTip(QCoreApplication::translate("ChatGui", "Close"));
     m_closeBtn->setCursor(Qt::ArrowCursor);
     m_closeBtn->setStyleSheet(
         "QPushButton { background: rgba(0,0,0,0.5); color: white; border: none; "
@@ -193,10 +194,10 @@ void VideoPlayerWindow::onStateChanged(int state) {
     VideoPlayerEngine::State s = (VideoPlayerEngine::State)state;
     if (s == VideoPlayerEngine::Playing) {
         m_playBtn->setText(QStringLiteral("⏸"));
-        m_playBtn->setToolTip(QStringLiteral("Пауза"));
+        m_playBtn->setToolTip(QCoreApplication::translate("ChatGui", "Pause"));
     } else if (s == VideoPlayerEngine::Paused || s == VideoPlayerEngine::Finished) {
         m_playBtn->setText(QStringLiteral("▶"));
-        m_playBtn->setToolTip(QStringLiteral("Играть"));
+        m_playBtn->setToolTip(QCoreApplication::translate("ChatGui", "Play"));
         showControls();
     }
 }