feat: timer widget with countdown, stopwatch and alarm

GameBarDaemon.qml

@@ -38,6 +38,16 @@ PluginComponent {
             "y": 0.14,
             "defaultVisible": true
         },
+        {
+            "id": "timer",
+            "title": "Timer",
+            "icon": "timer",
+            "width": 380,
+            "height": 320,
+            "x": 0.57,
+            "y": 0.58,
+            "defaultVisible": false
+        },
         {
             "id": "capture",
             "title": "Capture",
@@ -331,9 +341,8 @@ PluginComponent {
 
     // ── Overlay ──────────────────────────────────────────────────────────────
     function openOverlay() {
-        if (overlay.shouldBeVisible)
-            return;
-
+        // No early return on shouldBeVisible: the flag can survive a shell
+        // restart with no window mapped, which used to make open() a no-op.
         if (typeof PopoutService !== "undefined" && PopoutService)
             PopoutService.closeControlCenter();
 
@@ -416,6 +425,25 @@ PluginComponent {
             return "SUCCESS";
         }
 
+        function timer(seconds: string, label: string) : string {
+            const value = parseInt(seconds, 10);
+            if (isNaN(value) || value <= 0)
+                return "USAGE: timer <seconds> [label]";
+
+            timers.resetTimer();
+            timers.startTimer(value * 1000, label || "");
+            return "STARTED " + timers.formatDuration(value * 1000);
+        }
+
+        function timerStop() : string {
+            timers.resetTimer();
+            return "SUCCESS";
+        }
+
+        function timerStatus() : string {
+            return "timer=" + (timers.timerRunning ? "running" : (timers.timerFinished ? "finished" : "idle")) + " remaining=" + timers.formatDuration(timers.remainingMs) + " label=" + (timers.timerLabel || "(none)") + " stopwatch=" + (timers.stopwatchRunning ? "running" : "idle") + " elapsed=" + timers.formatStopwatch(timers.stopwatchElapsedMs);
+        }
+
         function layoutStatus() : string {
             const lines = Quickshell.screens.map(screen => {
                 const key = root.screenKey(screen);
@@ -459,6 +487,13 @@ PluginComponent {
 
     readonly property alias homeService: haService
     readonly property alias captureService: capture
+    readonly property alias timerService: timers
+
+    TimerService {
+        id: timers
+
+        daemon: root
+    }
 
     CaptureService {
         id: capture