Add upstream fix for session handling

Author: berolinux

6032b78512685dc7d6cc3754d536823d428525c4.patch

@@ -0,0 +1,38 @@
+From 6032b78512685dc7d6cc3754d536823d428525c4 Mon Sep 17 00:00:00 2001
+From: Felix Ernst <felixernst@zohomail.eu>
+Date: Wed, 16 Apr 2025 13:50:05 +0000
+Subject: [PATCH] Fix session restore
+
+Since https://commits.kde.org/kxmlgui/8c9fb02a1d37672b26a03a9dd9e8675743deb269
+KXmlGui only triggers a session restore for a window when the
+session config contains a "NumberOfWindows" key with a value >= 1.
+This commit adds such a key to the Dolphin session config, which
+fixes the Dolphin main window restore for KXmlGui versions
+containing that commit.
+
+BUG: 502770
+
+
+(cherry picked from commit c0bf226aa1cc02c9bffff1ec05e07a255d8d2f6e)
+
+Co-authored-by: Felix Ernst <felixernst@zohomail.eu>
+---
+ src/dolphinmainwindow.cpp | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/src/dolphinmainwindow.cpp b/src/dolphinmainwindow.cpp
+index 8a6c99ce57..391fe81a8c 100644
+--- a/src/dolphinmainwindow.cpp
++++ b/src/dolphinmainwindow.cpp
+@@ -757,6 +757,8 @@ void DolphinMainWindow::slotSaveSession()
+         KConfig *config = KConfigGui::sessionConfig();
+         saveGlobalProperties(config);
+         savePropertiesInternal(config, 1);
++        KConfigGroup group = config->group(QStringLiteral("Number"));
++        group.writeEntry("NumberOfWindows", 1); // Makes session restore aware that there is a window to restore.
+ 
+         auto future = QtConcurrent::run([config]() {
+             config->sync();
+-- 
+GitLab
+

plasma6-dolphin.spec

@@ -6,7 +6,7 @@
 Summary:	File manager for KDE focusing on usability
 Name:		plasma6-dolphin
 Version:	25.04.0
-Release:	%{?git:0.%{git}.}1
+Release:	%{?git:0.%{git}.}2
 License:	GPLv2+
 Group:		Graphical desktop/KDE
 %if 0%{?git:1}
@@ -65,6 +65,8 @@ dolphin-21.03.80-show-copyto-moveto-by-default.patch
 # Revert https://invent.kde.org/system/dolphin/-/commit/122fee5625f0285ec4ebda79162c72390989eb2a.patch
 # It makes the UI less consistent for the sake of making it idiot friendly. This isn't GNOME.
 revert-122fee5625f0285ec4ebda79162c72390989eb2a.patch
+# https://bugs.kde.org/show_bug.cgi?id=502770
+https://invent.kde.org/system/dolphin/-/commit/6032b78512685dc7d6cc3754d536823d428525c4.patch
 
 %description
 Dolphin is a file manager for KDE focusing on usability.