feat: simple bluetooth device low battery notification

cli.sh

@@ -283,14 +283,30 @@ brightness)
 			bash "${SCRIPT_DIR}/scripts/brightness_list.sh" >"${BRIGHTNESS_SAVE_FILE}.tmp" 2>/dev/null || {
 				echo "Warning: Could not query current brightness"
 			}
+			# Skip saving if brightness is 0 (screen off state) and we already have a save
 			if [ -f "${BRIGHTNESS_SAVE_FILE}.tmp" ]; then
-				while IFS=: read -r name bright method; do
-					if [ -n "$name" ] && [ -n "$bright" ]; then
-						echo "${name}:${bright}"
+				# Check if all values are 0 or very low (screen off state)
+				ALL_ZERO=true
+				while IFS=: read -r name bright; do
+					if [ -n "$bright" ] && [ "$bright" -gt 5 ]; then
+						ALL_ZERO=false
+						break
 					fi
-				done <"${BRIGHTNESS_SAVE_FILE}.tmp" >"$BRIGHTNESS_SAVE_FILE"
-				rm -f "${BRIGHTNESS_SAVE_FILE}.tmp"
-				echo "Saved current brightness for all monitors"
+				done <"${BRIGHTNESS_SAVE_FILE}.tmp"
+
+				# Only save if not all zero, OR if no previous save exists
+				if [ "$ALL_ZERO" = true ] && [ -f "$BRIGHTNESS_SAVE_FILE" ]; then
+					echo "Skipped saving - brightness at 0 (keeping previous save)"
+					rm -f "${BRIGHTNESS_SAVE_FILE}.tmp"
+				else
+					while IFS=: read -r name bright; do
+						if [ -n "$name" ] && [ -n "$bright" ]; then
+							echo "${name}:${bright}"
+						fi
+					done <"${BRIGHTNESS_SAVE_FILE}.tmp" >"$BRIGHTNESS_SAVE_FILE"
+					rm -f "${BRIGHTNESS_SAVE_FILE}.tmp"
+					echo "Saved current brightness for all monitors"
+				fi
 			fi
 		else
 			# Save specific monitor
@@ -352,14 +368,30 @@ brightness)
 				echo "Warning: Could not query current brightness"
 			}
 			# Convert format from name:brightness:method to name:brightness
+			# Skip saving if brightness is 0 (screen off state) and we already have a save
 			if [ -f "${BRIGHTNESS_SAVE_FILE}.tmp" ]; then
-				while IFS=: read -r name bright method; do
-					if [ -n "$name" ] && [ -n "$bright" ]; then
-						echo "${name}:${bright}"
+				# Check if all values are 0 or very low (screen off state)
+				ALL_ZERO=true
+				while IFS=: read -r name bright; do
+					if [ -n "$bright" ] && [ "$bright" -gt 5 ]; then
+						ALL_ZERO=false
+						break
 					fi
-				done <"${BRIGHTNESS_SAVE_FILE}.tmp" >"$BRIGHTNESS_SAVE_FILE"
-				rm -f "${BRIGHTNESS_SAVE_FILE}.tmp"
-				echo "Saved current brightness for all monitors"
+				done <"${BRIGHTNESS_SAVE_FILE}.tmp"
+
+				# Only save if not all zero, OR if no previous save exists
+				if [ "$ALL_ZERO" = true ] && [ -f "$BRIGHTNESS_SAVE_FILE" ]; then
+					echo "Skipped saving - brightness at 0 (keeping previous save)"
+					rm -f "${BRIGHTNESS_SAVE_FILE}.tmp"
+				else
+					while IFS=: read -r name bright; do
+						if [ -n "$name" ] && [ -n "$bright" ]; then
+							echo "${name}:${bright}"
+						fi
+					done <"${BRIGHTNESS_SAVE_FILE}.tmp" >"$BRIGHTNESS_SAVE_FILE"
+					rm -f "${BRIGHTNESS_SAVE_FILE}.tmp"
+					echo "Saved current brightness for all monitors"
+				fi
 			fi
 		else
 			# Save specific monitor

modules/services/BluetoothDevice.qml

@@ -14,8 +14,53 @@ QtObject {
     property int battery: -1
     property bool batteryAvailable: battery >= 0
     property bool connecting: false
+
+    // Battery notification tracking
+    property int previousBattery: -1
+    property bool notified15: false
+    property bool notified5: false
 
     signal infoUpdated()
+
+    // Battery low notification - only send once per threshold crossing
+    onBatteryChanged: {
+        // Skip if battery value hasn't actually changed
+        if (battery === previousBattery) {
+            return;
+        }
+
+        if (battery >= 0 && connected) {
+            // Only notify at 15% if crossing threshold from above
+            if (previousBattery > 15 && battery <= 15 && battery > 5 && !notified15) {
+                notified15 = true;
+                sendLowBatteryNotification(15);
+            }
+            // Only notify at 5% if crossing threshold from above
+            if (previousBattery > 5 && battery <= 5 && !notified5) {
+                notified5 = true;
+                sendLowBatteryNotification(5);
+            }
+            // Reset flags when battery goes back up
+            if (battery > 15) {
+                notified15 = false;
+                notified5 = false;
+            } else if (battery > 5) {
+                notified5 = false;
+            }
+        }
+        previousBattery = battery;
+    }
+
+    function sendLowBatteryNotification(percent) {
+        const urgency = percent <= 5 ? "critical" : "normal";
+        Quickshell.execDetached([
+            "notify-send",
+            "-u", urgency,
+            "-i", "battery-low",
+            "Bluetooth Battery Low",
+            `${name} battery is at ${battery}%`
+        ]);
+    }
 
     // Connect with auto-trust for new devices
     function connect() {

modules/services/IdleService.qml

@@ -60,6 +60,8 @@ Singleton {
     // Master Idle Logic
     property int elapsedIdleTime: 0
     property var triggeredListeners: [] // Keeps track of indices that have fired
+    property bool resumeCooldown: false // Prevent immediate resume after listener triggers
+    property bool pendingReset: false // Track if reset was requested during cooldown
 
     // Master Monitor: Detects "absence of activity" almost immediately
     IdleMonitor {
@@ -72,6 +74,26 @@ Singleton {
                 idleTimer.start();
             } else {
                 idleTimer.stop();
+                // If in cooldown, defer the reset
+                if (root.resumeCooldown) {
+                    root.pendingReset = true;
+                } else {
+                    root.resetIdleState();
+                }
+            }
+        }
+    }
+
+    // Cooldown timer - prevents resume for a short period after listener triggers
+    Timer {
+        id: cooldownTimer
+        interval: 1500 // 1.5 seconds - enough for lockscreen to fully load
+        repeat: false
+        onTriggered: {
+            root.resumeCooldown = false;
+            // Execute pending reset if activity happened during cooldown and user is still active
+            if (root.pendingReset && !masterMonitor.isIdle) {
+                root.pendingReset = false;
                 root.resetIdleState();
             }
         }
@@ -99,6 +121,10 @@ Singleton {
                     console.log("Idle timer " + tVal + "s reached: " + listener.onTimeout);
                     executionProc.command = ["sh", "-c", listener.onTimeout];
                     executionProc.running = true;
+
+                    // Activate cooldown to prevent immediate resume from listener-caused activity
+                    root.resumeCooldown = true;
+                    cooldownTimer.restart();
                 }
                 root.triggeredListeners.push(i);
             }