refactor: organize into rough directories

src/MainWindow.cpp

@@ -3,14 +3,14 @@
 //
 
 #include "MainWindow.h"
-#include "authdialog.h"
+#include "dialogs/authdialog.h"
 #include "authmanager.h"
-#include "createstreamdialog.h"
-#include "memberpickerdialog.h"
-#include "networkdetailwidget.h"
+#include "dialogs/createstreamdialog.h"
+#include "dialogs/memberpickerdialog.h"
+#include "widgets/networkdetailwidget.h"
 #include "networkmanager.h"
-#include "settingsdialog.h"
-#include "textinputdialog.h"
+#include "dialogs/settingsdialog.h"
+#include "dialogs/textinputdialog.h"
 #include <QApplication>
 #include <QJsonDocument>
 #include <QHeaderView>
@@ -404,6 +404,7 @@ void MainWindow::buildUi()
   hSeparator->setStyleSheet("color: rgba(128, 128, 128, 0.3);");
   hSeparator->setFixedHeight(1);
   mainLayout->addWidget(hSeparator);
+
   // ── Network detail widget (hidden by default) ──
 
   m_statusBar = new QStatusBar();