viewer: accept https:// endpoints and add an http/https selector to the connect dialog

- Route https:// URLs to the HTTP reader (LoadFile_i scheme check), not only http://.
- Replace the fixed "http://" label in the Open HTTP Connection dialog with a small
  http/https combo box and build the URL from the chosen scheme.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

viewer/JFJochImageReadingWorker.cpp

@@ -207,7 +207,7 @@ void JFJochImageReadingWorker::LoadFile_i(const QString &filename, qint64 image_
         std::shared_ptr<const JFJochReaderDataset> dataset;
         auto start = std::chrono::high_resolution_clock::now();
 
-        if (filename.startsWith("http://")) {
+        if (filename.startsWith("http://") || filename.startsWith("https://")) {
             http_mode = true;
             http_reader.ReadURL(filename.toStdString());
             total_images = http_reader.GetNumberOfImages();

viewer/JFJochViewerMenu.cpp

@@ -12,6 +12,7 @@
 #include <QLabel>
 #include <QLineEdit>
 #include <QSpinBox>
+#include <QComboBox>
 #include <QDialogButtonBox>
 #include <QDockWidget>
 
@@ -177,7 +178,12 @@ void JFJochViewerMenu::openHttpSelected() {
     dialog.setMinimumWidth(400);
 
     QGridLayout *layout = new QGridLayout(&dialog);
-    layout->addWidget(new QLabel("http://"), 0, 0);
+
+    // Scheme selector: plain HTTP (broker directly) or HTTPS (e.g. broker behind a reverse proxy).
+    QComboBox *schemeCombo = new QComboBox(&dialog);
+    schemeCombo->addItem("http://");
+    schemeCombo->addItem("https://");
+    layout->addWidget(schemeCombo, 0, 0);
     layout->addWidget(new QLabel(":"), 0, 2);
 
     QLineEdit *hostEdit = new QLineEdit(&dialog);
@@ -211,7 +217,8 @@ void JFJochViewerMenu::openHttpSelected() {
     dialog.setLayout(layout);
 
     if (dialog.exec() == QDialog::Accepted) {
-        QString url = QString("http://%1:%2")
+        QString url = QString("%1%2:%3")
+                .arg(schemeCombo->currentText())
                 .arg(hostEdit->text())
                 .arg(portSpinBox->value());