Make username/password connect prompts hard to miss (issue #22)

The inline prompt bar previously had no explicit styling and rendered
in the same color as the rest of the tab; a tab showing the prompt in
the background had no indication anything needed attention. The bar
now uses a solid QPalette::Highlight fill with HighlightedText for the
label and a hand-drawn contrasting badge, and a background tab gets a
"(Needs input)" title suffix plus a distinct tab-bar color.

A first pass at the tab color (#6a1b9a) was reported unreadable in
dark mode; replaced with #ab47bc, tuned to match the visibility of the
existing connection-state colors.

Bump version to v2026.9.16.6.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/session_tab.cpp

@@ -17,10 +17,14 @@
 #include <QLabel>
 #include <QLineEdit>
 #include <QMessageBox>
+#include <QPainter>
+#include <QPalette>
+#include <QPixmap>
 #include <QPlainTextEdit>
 #include <QApplication>
 #include <QClipboard>
 #include <QMimeData>
+#include <QColor>
 #include <QComboBox>
 #include <QProcessEnvironment>
 #include <QPushButton>
@@ -59,6 +63,34 @@ TerminalTheme themeForName(const QString& themeName)
     return TerminalTheme::loadKonsoleTheme(
         QStringLiteral(":/KodoTermThemes/konsole/Breeze.colorscheme"));
 }
+
+// A filled circle with a bold "?", used on the username/password prompt
+// bar (issue #22). Drawn by hand rather than pulled from a QStyle standard
+// icon because a themed icon's own internal colors are outside our
+// control and could end up close in hue to the bar's own background,
+// undermining the contrast the bar is trying to achieve; painting it
+// ourselves guarantees fillColor/textColor are exactly the same
+// guaranteed-contrasting pair used for the rest of the bar.
+QPixmap questionMarkBadgePixmap(const QColor& fillColor, const QColor& textColor, int diameter)
+{
+    QPixmap pixmap(diameter, diameter);
+    pixmap.fill(Qt::transparent);
+
+    QPainter painter(&pixmap);
+    painter.setRenderHint(QPainter::Antialiasing, true);
+    painter.setPen(Qt::NoPen);
+    painter.setBrush(fillColor);
+    painter.drawEllipse(0, 0, diameter, diameter);
+
+    QFont font = painter.font();
+    font.setBold(true);
+    font.setPixelSize(static_cast<int>(diameter * 0.65));
+    painter.setFont(font);
+    painter.setPen(textColor);
+    painter.drawText(QRect(0, 0, diameter, diameter), Qt::AlignCenter, QStringLiteral("?"));
+
+    return pixmap;
+}
 }
 
 SessionTab::SessionTab(const Profile& profile,
@@ -93,10 +125,12 @@ SessionTab::SessionTab(const Profile& profile,
       m_exportEventsButton(nullptr),
       m_eventsPanel(nullptr),
       m_passwordPromptBar(nullptr),
+      m_passwordPromptIcon(nullptr),
       m_passwordPromptLabel(nullptr),
       m_passwordPromptInput(nullptr),
       m_passwordPromptConnectButton(nullptr),
       m_passwordPromptCancelButton(nullptr),
+      m_awaitingUserInput(false),
       m_eventSeverityFilter(EventSeverity::Info),
       m_eventsPanelExpanded(preferences.eventsPanelExpanded)
 {
@@ -341,9 +375,17 @@ SessionTab::~SessionTab()
 
 QString SessionTab::tabTitle() const
 {
+    if (m_awaitingUserInput) {
+        return QStringLiteral("%1 (Needs input)").arg(m_profile.name);
+    }
     return QStringLiteral("%1 (%2)").arg(m_profile.name, stateSuffix());
 }
 
+bool SessionTab::awaitingUserInput() const
+{
+    return m_awaitingUserInput;
+}
+
 void SessionTab::connectSession()
 {
     if (m_state == SessionState::Connecting || m_state == SessionState::Connected) {
@@ -806,21 +848,42 @@ void SessionTab::setupUi()
 
     applyTerminalTheme(m_terminalThemeName);
 
+    // Styled distinctly (issue #22: this bar used to blend straight into
+    // the plain window background and was easy to miss, especially on a
+    // tab you weren't actively looking at). A solid QPalette::Highlight
+    // fill with QPalette::HighlightedText for the label is used rather
+    // than a subtle tint -- a faint tint proved to still be easy to miss,
+    // and Highlight/HighlightedText are the OS theme's own guaranteed-
+    // contrasting pair, so this stays readable under both light and dark
+    // themes without hardcoding a color.
     auto* passwordPromptLayout = new QHBoxLayout();
+    m_passwordPromptIcon = new QLabel(this);
+    const QColor highlight = palette().color(QPalette::Highlight);
+    const QColor highlightedText = palette().color(QPalette::HighlightedText);
+    m_passwordPromptIcon->setPixmap(questionMarkBadgePixmap(highlightedText, highlight, 22));
     m_passwordPromptLabel = new QLabel(this);
+    m_passwordPromptLabel->setObjectName(QStringLiteral("passwordPromptLabel"));
     m_passwordPromptInput = new QLineEdit(this);
     m_passwordPromptInput->setEchoMode(QLineEdit::Password);
     m_passwordPromptConnectButton = new QPushButton(QStringLiteral("Connect"), this);
     m_passwordPromptCancelButton = new QPushButton(QStringLiteral("Cancel"), this);
+    passwordPromptLayout->addWidget(m_passwordPromptIcon);
     passwordPromptLayout->addWidget(m_passwordPromptLabel);
     passwordPromptLayout->addWidget(m_passwordPromptInput, 1);
     passwordPromptLayout->addWidget(m_passwordPromptConnectButton);
     passwordPromptLayout->addWidget(m_passwordPromptCancelButton);
+    passwordPromptLayout->setContentsMargins(10, 8, 10, 8);
 
     m_passwordPromptBar = new QWidget(this);
+    m_passwordPromptBar->setObjectName(QStringLiteral("passwordPromptBar"));
     m_passwordPromptBar->setLayout(passwordPromptLayout);
     m_passwordPromptBar->setAutoFillBackground(true);
     m_passwordPromptBar->setVisible(false);
+    m_passwordPromptBar->setStyleSheet(
+        QStringLiteral("QWidget#passwordPromptBar { background-color: %1; }"
+                       "QWidget#passwordPromptBar QLabel#passwordPromptLabel "
+                       "{ color: %2; font-weight: bold; font-size: 11pt; }")
+            .arg(highlight.name(), highlightedText.name()));
     rootLayout->addWidget(m_passwordPromptBar);
 
     connect(m_passwordPromptConnectButton, &QPushButton::clicked, this, [this]() {
@@ -1161,12 +1224,24 @@ void SessionTab::showPasswordPrompt(const QString& labelText,
     m_passwordPromptInput->setEchoMode(maskInput ? QLineEdit::Password : QLineEdit::Normal);
     m_passwordPromptBar->setVisible(true);
     m_passwordPromptInput->setFocus();
+
+    if (!m_awaitingUserInput) {
+        m_awaitingUserInput = true;
+        emit awaitingUserInputChanged(true);
+        emit tabTitleChanged(tabTitle());
+    }
 }
 
 void SessionTab::hidePasswordPrompt()
 {
     m_passwordPromptBar->setVisible(false);
     m_passwordPromptCallback = nullptr;
+
+    if (m_awaitingUserInput) {
+        m_awaitingUserInput = false;
+        emit awaitingUserInputChanged(false);
+        emit tabTitleChanged(tabTitle());
+    }
 }
 
 bool SessionTab::validateProfileForConnect()