android: member list screen + link status dots, ipv6 autoconnect fixes

Android chatgui:
- New MemberListScreen with member list, detail card, edit dialog
- Link status dots (green/red/grey) per address in detail card (1s poll)
- Self-node name coloured green
- ChatScreen: people icon in TopAppBar

IPv6 autoconnect fixes (3 bugs in conn_mgr/topo):
- topo_node_sqlite_node_load: load v6 addresses from DB
- topo_node_registry_store: merge v6_addrs into existing node
- cm_sock_v6_classify: wildcard [::] treated as CM_V6_DIR
- cm_add_v6_link: htons(port) was missing

Memory fixes:
- strdup→u_strdup in bridge (7 instances)
- u_realloc cap update before success check (3 instances)
- char sql[256]→[512] for truncated SELECT

Chat member hash now includes addresses for change detection

Linux chatgui:
- Link status dots in AccountList detail panel (1s poll)
- Self-node name in green in member list

tools/chatgui/src/accountdelegate.cpp

@@ -35,6 +35,7 @@ void AccountDelegate::paint(QPainter *painter, const QStyleOptionViewItem &optio
 
     QColor textColor = option.palette.color(QPalette::Text);
     if (option.state & QStyle::State_Selected) textColor = option.palette.color(QPalette::HighlightedText);
+    if (index.data(Qt::UserRole + 2).toBool()) textColor = QColor("#4CAF50");
     painter->setPen(textColor);
 
     QString name = index.data(Qt::DisplayRole).toString();

tools/chatgui/src/accountlist.cpp

@@ -10,6 +10,13 @@
 #include <QFont>
 #include "../../../lib/platform_compat.h"
 
+extern "C" {
+    #include "utun_instance.h"
+    #include "etcp.h"
+    #include "etcp_connections.h"
+    #include "../lib/socket_compat.h"
+}
+
 QString AccountList::addrStr(const void* addr, int family) {
     if (family == 4) {
         const uint8_t* a = (const uint8_t*)addr;
@@ -84,12 +91,19 @@ AccountList::AccountList(DbManager* db, QWidget *parent)
     m_detailTimer = new QTimer(this);
     m_detailTimer->setInterval(5000);
     connect(m_detailTimer, &QTimer::timeout, this, &AccountList::onDetailTimerTick);
+
+    m_linkTimer = new QTimer(this);
+    m_linkTimer->setInterval(1000);
+    connect(m_linkTimer, &QTimer::timeout, this, [this]{
+        if (m_detailNodeId != 0) updateDetailDisplay();
+    });
 }
 
 void AccountList::setChannel(const QString& channelId) {
     m_channelId = channelId;
     m_model->setChannel(channelId);
     m_detailTimer->stop();
+    m_linkTimer->stop();
     m_detailNodeId = 0;
     m_detailText->clear();
 }
@@ -106,6 +120,7 @@ void AccountList::showMemberDetail(quint64 nodeId) {
     if (!m_db || !m_db->m_db) return;
 
     m_detailTimer->stop();
+    m_linkTimer->stop();
     m_detailNodeId = nodeId;
     m_detailName.clear();
     m_detailOnline = false;
@@ -166,6 +181,7 @@ void AccountList::showMemberDetail(quint64 nodeId) {
     }
 
     m_detailTimer->start();
+    m_linkTimer->start();
     updateDetailDisplay();
 }
 
@@ -184,10 +200,35 @@ void AccountList::updateDetailDisplay() {
     if (m_detailCreated > 0)
         lines.append(QString("📅 %1").arg(relativeTimeStr(m_detailCreated)));
 
+    struct ETCP_CONN* conn = nullptr;
+    if (m_inst) conn = instance_find_conn(m_inst, m_detailNodeId);
+
     for (const auto& a : m_detailAddrs) {
         QString proto;
         switch (a.protocol) { case 1: proto = "UDP"; break; case 2: proto = "TCP"; break; default: proto = "UDP/TCP"; break; }
-        lines.append(QString("%1:%2:%3").arg(proto, addrStr(a.addr.constData(), a.family)).arg(a.port));
+        QString linkColor = "#9E9E9E";
+        if (conn) {
+            for (struct ETCP_LINK* lk = conn->links; lk; lk = lk->next) {
+                const struct sockaddr_storage* sa = &lk->remote_addr;
+                int lfm = 0; QString lip; uint16_t lpo = 0;
+                char ipbuf[INET6_ADDRSTRLEN];
+                if (sa->ss_family == AF_INET) {
+                    struct sockaddr_in* sin = (struct sockaddr_in*)sa;
+                    inet_ntop(AF_INET, &sin->sin_addr, ipbuf, sizeof(ipbuf));
+                    lfm = 4; lpo = ntohs(sin->sin_port); lip = QString::fromLocal8Bit(ipbuf);
+                } else if (sa->ss_family == AF_INET6) {
+                    struct sockaddr_in6* sin6 = (struct sockaddr_in6*)sa;
+                    inet_ntop(AF_INET6, &sin6->sin6_addr, ipbuf, sizeof(ipbuf));
+                    lfm = 6; lpo = ntohs(sin6->sin6_port); lip = QString::fromLocal8Bit(ipbuf);
+                }
+                if (lfm == a.family && lpo == (uint16_t)a.port && lip == addrStr(a.addr.constData(), a.family)) {
+                    linkColor = (lk->link_state == 3 && lk->link_status == 1) ? "#4CAF50" : "#E53935";
+                    break;
+                }
+            }
+        }
+        lines.append(QString("<span style='color:%1;'>●</span> %2:%3:%4")
+                     .arg(linkColor, proto, addrStr(a.addr.constData(), a.family)).arg(a.port));
     }
 
     m_detailText->setHtml(lines.join("<br>"));

tools/chatgui/src/accountlist.h

@@ -6,9 +6,11 @@
 #include <QTimer>
 #include <QMenu>
 #include <QVector>
+#include <QElapsedTimer>
 
 class MemberListModel;
 class DbManager;
+struct UTUN_INSTANCE;
 
 struct DetailAddress {
     int        family;
@@ -24,6 +26,7 @@ public:
 
     void setChannel(const QString& channelId);
     void refresh();
+    void setUtunInstance(struct UTUN_INSTANCE* inst) { m_inst = inst; }
 
 signals:
     void memberRenamed();
@@ -46,8 +49,11 @@ private:
     QTextEdit       *m_detailText;
     QTimer          *m_refreshTimer;
     QTimer          *m_detailTimer;
+    QTimer          *m_linkTimer;
     QString          m_channelId;
 
+    struct UTUN_INSTANCE* m_inst = nullptr;
+
     quint64           m_detailNodeId = 0;
     QString           m_detailName;
     bool              m_detailOnline = false;

tools/chatgui/src/mainwindow.cpp

@@ -133,8 +133,9 @@ void MainWindow::setupNode() {
     connect(m_node, &UtunNode::error, this, [](const QString& msg) {
         qWarning("UtunNode error: %s", qPrintable(msg));
     });
-    connect(m_node, &UtunNode::started, this, []() {
+    connect(m_node, &UtunNode::started, this, [this]() {
         qDebug("UtunNode started");
+        if (m_accountList && m_node) m_accountList->setUtunInstance(m_node->instance());
     });
     connect(m_node, &UtunNode::stopped, this, [this]() {
         qDebug("UtunNode stopped");

tools/chatgui/src/memberlistmodel.cpp

@@ -34,6 +34,7 @@ QVariant MemberListModel::data(const QModelIndex& index, int role) const {
         if (role == Qt::ToolTipRole)
             return QString(it->online ? "online" : "offline") + " | 0x" +
                    QString("%1").arg(it->nodeId, 16, 16, QChar('0'));
+        if (role == Qt::UserRole + 2) return it->isSelf;
         return {};
     }
 
@@ -90,6 +91,7 @@ void MemberListModel::loadBatch(int from, int count) {
         int row = from + i;
         MemberListItem& item = m_cache[row];
         item.nodeId = members[i].nodeId;
+        item.isSelf = (item.nodeId == m_db->myNodeId());
         item.online = members[i].online;
         QString shortId = QString("%1").arg(members[i].nodeId, 8, 16, QChar('0')).right(4).toUpper();
         item.name = members[i].name.isEmpty() ? shortId : members[i].name;

tools/chatgui/src/memberlistmodel.h

@@ -13,11 +13,12 @@ class DbManager;
 struct MemberListItem {
     quint64 nodeId = 0;
     bool    online = false;
+    bool    isSelf = false;
     QPixmap avatar;
     QString name;
     QString localNick;
-    int     rtt = -1;       // ms (min из node_addresses, -1 если нет)
-    int     natType = -1;   // addr_type: 0=NET, 1=DIR, 2=EIM, 3=STR
+    int     rtt = -1;
+    int     natType = -1;
 };
 
 class MemberListModel : public QAbstractListModel {

tools/chatgui/transport/utun_node.h

@@ -31,6 +31,8 @@ public:
     void setDebugLevel(const QString& level);
     void setDebugCategories(const QString& categories);
 
+    struct UTUN_INSTANCE* instance() const { return m_instance; }
+
     void send(uint64_t dstNodeId, const QByteArray& data);
 
     QString nodeIdHex() const;