auto-connect + GUI per-channel indicators

- chat_core_connect_auto: direct ETCP connect from SQLite (no BGP)
- auto_connect: parallel connect to peers with 3s timeout, retry 10s
- RTT saved to node_addresses on disconnect
- vertical status bar + circle badge with online count per channel
- ChannelListView prevents deselection

tools/chatgui/src/channellist.cpp

@@ -8,6 +8,28 @@
 #include <QPainter>
 #include <QPixmap>
 #include <QMenu>
+#include <QMouseEvent>
+
+/* QListView that prevents deselection */
+class ChannelListView : public QListView {
+public:
+    using QListView::QListView;
+protected:
+    void mousePressEvent(QMouseEvent* e) override {
+        if (indexAt(e->pos()).isValid())
+            QListView::mousePressEvent(e);
+    }
+    QItemSelectionModel::SelectionFlags selectionCommand(const QModelIndex& idx, const QEvent* e) const override {
+        if (idx.isValid())
+            return QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Current;
+        return QItemSelectionModel::NoUpdate;
+    }
+    void selectionChanged(const QItemSelection& sel, const QItemSelection& desel) override {
+        QListView::selectionChanged(sel, desel);
+        if (selectionModel() && !selectionModel()->hasSelection() && currentIndex().isValid())
+            selectionModel()->select(currentIndex(), QItemSelectionModel::ClearAndSelect);
+    }
+};
 
 static QIcon makeChannelIcon(const QColor &color, const QString &letter) {
     QPixmap pix(32, 32);
@@ -29,7 +51,7 @@ static QIcon makeChannelIcon(const QColor &color, const QString &letter) {
 
 ChannelList::ChannelList(DbManager* db, QWidget *parent)
     : QWidget(parent)
-    , m_listView(new QListView(this))
+    , m_listView(new ChannelListView(this))
     , m_model(new QStandardItemModel(this))
     , m_db(db)
 {
@@ -161,3 +183,22 @@ void ChannelList::onContextMenu(const QPoint& pos) {
     if (menu.exec(m_listView->viewport()->mapToGlobal(pos)) == inviteAction)
         emit inviteRequested(cid);
 }
+
+void ChannelList::setChannelPeersOnline(const QString& channelId, int count) {
+    for (int row = 0; row < m_model->rowCount(); row++) {
+        QStandardItem* item = m_model->item(row);
+        if (item && item->data(ChannelChannelIdRole).toString() == channelId) {
+            item->setData(count, ChannelPeersOnlineRole);
+            item->setData(m_autoConnectActive ? 1 : 0, ChannelAutoConnectActiveRole);
+            break;
+        }
+    }
+}
+
+void ChannelList::setAutoConnectActive(bool active) {
+    m_autoConnectActive = active;
+    for (int row = 0; row < m_model->rowCount(); row++) {
+        QStandardItem* item = m_model->item(row);
+        if (item) item->setData(active ? 1 : 0, ChannelAutoConnectActiveRole);
+    }
+}