lock: add lock at startup action, not sure how to handle it in crash

scenarios
launcher v2: fix state reset in section changes
fixes #1648

quickshell/Common/SettingsData.qml

@@ -483,6 +483,7 @@ Singleton {
     property bool lockScreenShowPasswordField: true
     property bool lockScreenShowMediaPlayer: true
     property bool lockScreenPowerOffMonitorsOnLock: false
+    property bool lockAtStartup: false
 
     property bool enableFprint: false
     property int maxFprintTries: 15

quickshell/Common/settings/SettingsSpec.js

@@ -310,6 +310,7 @@ var SPEC = {
     lockScreenShowPasswordField: { def: true },
     lockScreenShowMediaPlayer: { def: true },
     lockScreenPowerOffMonitorsOnLock: { def: false },
+    lockAtStartup: { def: false },
     enableFprint: { def: false },
     maxFprintTries: { def: 15 },
     fprintdAvailable: { def: false, persist: false },

quickshell/Modals/DankLauncherV2/ResultsList.qml

@@ -112,6 +112,11 @@ Item {
         function onViewModeVersionChanged() {
             Qt.callLater(root._rebuildVisualModel);
         }
+        function onSearchModeChanged() {
+            root._visualRows = [];
+            root._cumulativeHeights = [];
+            root._flatIndexToRowMap = {};
+        }
     }
 
     function resetScroll() {
@@ -355,9 +360,6 @@ Item {
         readonly property int versionTrigger: root.controller?.viewModeVersion ?? 0
 
         readonly property var stickyHeaderSection: {
-            if (!root.controller?.sections || root.controller.sections.length === 0)
-                return null;
-
             var scrollY = mainListView.contentY - mainListView.originY;
             if (scrollY <= 0)
                 return null;

quickshell/Modules/Lock/Lock.qml

@@ -43,6 +43,8 @@ Scope {
 
     Component.onCompleted: {
         IdleService.lockComponent = this;
+        if (SettingsData.lockAtStartup)
+            lock();
     }
 
     function notifyLoginctl(lockAction: bool) {
@@ -204,7 +206,6 @@ Scope {
     }
 
     LockScreenDemo {
-
         id: demoWindow
     }
 

quickshell/Modules/Settings/LockScreenTab.qml

@@ -148,6 +148,15 @@ Item {
                     onToggled: checked => SettingsData.set("lockScreenPowerOffMonitorsOnLock", checked)
                 }
 
+                SettingsToggleRow {
+                    settingKey: "lockAtStartup"
+                    tags: ["lock", "screen", "startup", "start", "boot", "login", "automatic"]
+                    text: I18n.tr("Lock at startup")
+                    description: I18n.tr("Automatically lock the screen when DMS starts")
+                    checked: SettingsData.lockAtStartup
+                    onToggled: checked => SettingsData.set("lockAtStartup", checked)
+                }
+
                 SettingsToggleRow {
                     settingKey: "enableFprint"
                     tags: ["lock", "screen", "fingerprint", "authentication", "biometric", "fprint"]