Add startup application picker

config/dot/quickshell/modules/settings/ApplicationsPage.qml

@@ -12,6 +12,7 @@ SettingsPage {
     lede: "Choose what opens your files and links, and what starts with your session."
 
     property string expandedRole: ""
+    property bool addingAutostart: false
     readonly property var applications: DesktopEntries.applications.values
     readonly property var roles: [
         { key: "browser", label: "Browser", detail: "Web links and HTML pages", categorySets: [["webbrowser"]], terms: ["web browser", "browser"] },
@@ -178,7 +179,28 @@ SettingsPage {
 
     SettingsCard {
         title: "User autostart"
-        subtitle: "These desktop entries live in your user configuration. Select a row to toggle it."
+        subtitle: "Choose what starts with your session. Entries live in your user configuration, not the compositor."
+
+        ActionRow {
+            label: "Add an application"
+            detail: root.addingAutostart
+                ? "Search the applications installed on this machine"
+                : "Start another installed application when you sign in"
+            action: root.addingAutostart ? "Close" : "Choose"
+            divider: !root.addingAutostart || DefaultApps.autostartEntries.length > 0
+            enabled: !DefaultApps.busy
+            onTriggered: root.addingAutostart = !root.addingAutostart
+        }
+
+        AutostartAppPicker {
+            visible: root.addingAutostart
+            width: parent.width
+            existing: DefaultApps.autostartEntries.map(entry => entry.id)
+            onPicked: id => {
+                DefaultApps.addAutostart(id);
+                root.addingAutostart = false;
+            }
+        }
 
         TextRow {
             visible: !DefaultApps.busy && DefaultApps.autostartEntries.length === 0