refactor: ProcessList non-singleton with sortBy+active, each panel owns one instance gated on _showPanel

modules/Battery.qml

@@ -31,7 +31,7 @@ M.BarSection {
         NumberAnimation {
             target: root
             property: "_blinkOpacity"
-            to: 0.2
+            to: 0.45
             duration: 400
             easing.type: Easing.InOutQuad
         }

modules/Cpu.qml

@@ -32,6 +32,11 @@ M.BarSection {
     readonly property bool _anyHover: root._hovered || hoverPanel.panelHovered
     readonly property bool _showPanel: _anyHover || _pinned
 
+    property M.ProcessList _procs: M.ProcessList {
+        sortBy: "cpu"
+        active: root._showPanel
+    }
+
     on_AnyHoverChanged: {
         if (_anyHover)
             _unpinTimer.stop();
@@ -258,7 +263,7 @@ M.BarSection {
 
         // Top processes by CPU
         Repeater {
-            model: M.ProcessList.byCpu
+            model: root._procs.processes
 
             delegate: Item {
                 required property var modelData

modules/Memory.qml

@@ -21,6 +21,11 @@ M.BarSection {
     readonly property bool _anyHover: root._hovered || hoverPanel.panelHovered
     readonly property bool _showPanel: _anyHover || _pinned
 
+    property M.ProcessList _procs: M.ProcessList {
+        sortBy: "mem"
+        active: root._showPanel
+    }
+
     on_AnyHoverChanged: {
         if (_anyHover)
             _unpinTimer.stop();
@@ -223,7 +228,7 @@ M.BarSection {
 
         // Top processes by memory
         Repeater {
-            model: M.ProcessList.byMem
+            model: root._procs.processes
 
             delegate: Item {
                 required property var modelData

modules/NiriIpc.qml

@@ -11,6 +11,29 @@ QtObject {
     signal windowFocusChanged(var windowId)
     signal windowOpenedOrChanged(var window)
 
+    property string focusedTitle: ""
+    property string focusedAppId: ""
+    property bool overviewOpen: false
+
+    property var _focusedProc: Process {
+        running: true
+        command: ["niri", "msg", "--json", "focused-window"]
+        stdout: StdioCollector {
+            onStreamFinished: {
+                try {
+                    const w = JSON.parse(text);
+                    if (w) {
+                        root.focusedTitle = w.title || "";
+                        root.focusedAppId = w.app_id || "";
+                    } else {
+                        root.focusedTitle = "";
+                        root.focusedAppId = "";
+                    }
+                } catch (e) {}
+            }
+        }
+    }
+
     property var _eventStream: Process {
         running: true
         command: ["niri", "msg", "--json", "event-stream"]
@@ -23,10 +46,24 @@ QtObject {
                         root.workspacesChanged(ev.WorkspacesChanged.workspaces);
                     else if (ev.WorkspaceActivated !== undefined)
                         root.workspaceActivated(ev.WorkspaceActivated.id, ev.WorkspaceActivated.focused);
-                    else if (ev.WindowFocusChanged !== undefined)
+                    else if (ev.WindowFocusChanged !== undefined) {
                         root.windowFocusChanged(ev.WindowFocusChanged.id);
-                    else if (ev.WindowOpenedOrChanged !== undefined)
+                        if (ev.WindowFocusChanged.id !== null)
+                            root._focusedProc.running = true;
+                        else {
+                            root.focusedTitle = "";
+                            root.focusedAppId = "";
+                        }
+                    } else if (ev.OverviewOpenedOrClosed !== undefined) {
+                        root.overviewOpen = ev.OverviewOpenedOrClosed.is_open;
+                    } else if (ev.WindowOpenedOrChanged !== undefined) {
                         root.windowOpenedOrChanged(ev.WindowOpenedOrChanged.window);
+                        const w = ev.WindowOpenedOrChanged.window;
+                        if (w.is_focused) {
+                            root.focusedTitle = w.title || "";
+                            root.focusedAppId = w.app_id || "";
+                        }
+                    }
                 } catch (e) {}
             }
         }

modules/OverviewBackdrop.qml

@@ -37,10 +37,18 @@ PanelWindow {
         property color uC1: M.Theme.base0E
         property color uC2: M.Theme.base09
 
-        // Wave animation: 6s sweep + 8s pause
+        Connections {
+            target: M.NiriIpc
+            function onOverviewOpenChanged() {
+                if (!M.NiriIpc.overviewOpen)
+                    fx.uWavePhase = -200;
+            }
+        }
+
+        // Wave animation: 6s sweep + 8s pause, only while overview is open
         SequentialAnimation on uWavePhase {
             loops: Animation.Infinite
-            running: true
+            running: M.NiriIpc.overviewOpen
             NumberAnimation {
                 from: -200
                 to: fx.width + 200

modules/ProcessList.qml

@@ -1,48 +1,43 @@
-pragma Singleton
-
 import QtQuick
 import Quickshell.Io
-import "." as M
 
 QtObject {
     id: root
 
-    property var byCpu: []
-    property var byMem: []
+    property string sortBy: "cpu"   // "cpu" or "mem"
     property int maxItems: 8
+    property bool active: false
+
+    property var processes: []
 
     property Process _proc: Process {
-        id: proc
-        running: true
-        command: ["sh", "-c", "ps aux --sort=-%cpu 2>/dev/null | awk 'NR>1 && NR<=50 {cmd=$11; for(i=12;i<=NF&&i<=13;i++) cmd=cmd\" \"$i; print $1\"|\"$2\"|\"$3\"|\"$4\"|\"cmd}'"]
+        command: ["sh", "-c", "ps --no-headers -eo pid,pcpu,pmem,comm --sort=-%" + root.sortBy + " | head -" + root.maxItems]
         stdout: StdioCollector {
             onStreamFinished: {
                 const rows = [];
                 for (const line of text.trim().split("\n")) {
                     if (!line)
                         continue;
-                    const p = line.split("|");
-                    if (p.length < 5)
+                    const p = line.trim().split(/\s+/);
+                    if (p.length < 4)
                         continue;
-                    const cmd = p[4].replace(/^.*\//, "");
                     rows.push({
-                        "user": p[0],
-                        "pid": parseInt(p[1]),
-                        "cpu": parseFloat(p[2]),
-                        "mem": parseFloat(p[3]),
-                        "cmd": cmd || p[4]
+                        "pid": parseInt(p[0]),
+                        "cpu": parseFloat(p[1]),
+                        "mem": parseFloat(p[2]),
+                        "cmd": p.slice(3).join(" ")
                     });
                 }
-                root.byCpu = rows.slice().sort((a, b) => b.cpu - a.cpu).slice(0, root.maxItems);
-                root.byMem = rows.slice().sort((a, b) => b.mem - a.mem).slice(0, root.maxItems);
+                root.processes = rows;
             }
         }
     }
 
     property Timer _timer: Timer {
         interval: 2000
-        running: true
+        running: root.active
         repeat: true
-        onTriggered: proc.running = true
+        triggeredOnStart: true
+        onTriggered: root._proc.running = true
     }
 }

modules/WindowTitle.qml

@@ -1,63 +1,23 @@
 import QtQuick
 import QtQuick.Effects
 import Quickshell
-import Quickshell.Io
 import Quickshell.Widgets
 import "." as M
 
 M.BarSection {
     id: root
     spacing: M.Theme.moduleSpacing
-    visible: M.Modules.windowTitle.enable && root._title !== ""
+    visible: M.Modules.windowTitle.enable && M.NiriIpc.focusedTitle !== ""
 
-    tooltip: root._appId ? root._appId + "\n" + root._title : root._title
+    tooltip: M.NiriIpc.focusedAppId ? M.NiriIpc.focusedAppId + "\n" + M.NiriIpc.focusedTitle : M.NiriIpc.focusedTitle
 
-    property string _title: ""
-    property string _appId: ""
     readonly property string _iconSource: {
-        if (!root._appId)
+        if (!M.NiriIpc.focusedAppId)
             return "";
-        const entry = DesktopEntries.heuristicLookup(root._appId);
+        const entry = DesktopEntries.heuristicLookup(M.NiriIpc.focusedAppId);
         return entry ? Quickshell.iconPath(entry.icon) : "";
     }
 
-    // Initial state — niri event-stream doesn't replay current focus
-    Process {
-        id: initProc
-        running: true
-        command: ["niri", "msg", "--json", "focused-window"]
-        stdout: StdioCollector {
-            onStreamFinished: {
-                try {
-                    const w = JSON.parse(text);
-                    if (w) {
-                        root._title = w.title || "";
-                        root._appId = w.app_id || "";
-                    }
-                } catch (e) {}
-            }
-        }
-    }
-
-    // Live updates via shared NiriIpc singleton
-    Connections {
-        target: M.NiriIpc
-        function onWindowFocusChanged(windowId) {
-            if (windowId !== null)
-                initProc.running = true;
-            else {
-                root._title = "";
-                root._appId = "";
-            }
-        }
-        function onWindowOpenedOrChanged(window) {
-            if (window.is_focused) {
-                root._title = window.title || "";
-                root._appId = window.app_id || "";
-            }
-        }
-    }
-
     IconImage {
         visible: root._iconSource !== ""
         source: root._iconSource
@@ -71,7 +31,7 @@ M.BarSection {
     }
 
     M.BarLabel {
-        label: root._title
+        label: M.NiriIpc.focusedTitle
         color: root.accentColor
         elide: Text.ElideRight
         anchors.verticalCenter: parent.verticalCenter

modules/qmldir

@@ -34,7 +34,7 @@ IdleInhibitor 1.0 IdleInhibitor.qml
 Notifications 1.0 Notifications.qml
 singleton NiriIpc 1.0 NiriIpc.qml
 singleton SystemStats 1.0 SystemStats.qml
-singleton ProcessList 1.0 ProcessList.qml
+ProcessList 1.0 ProcessList.qml
 singleton NotifService 1.0 NotifService.qml
 NotifItem 1.0 NotifItem.qml
 NotifPopup 1.0 NotifPopup.qml