The Menu Render Guard implemetned to prevent IPC errors after sleep/wake

WindowManager.lua

@@ -34,6 +34,7 @@ obj.saveCountdown = obj.saveInterval
 obj.isRescued = false 
 obj.isTransitioning = false 
 obj.isRestoring = false 
+obj.isMenuUpdating = false -- Safety guard to prevent concurrent IPC menu rendering loops
 obj.wakeTimer = nil     
 obj.lastScreenCount = #hs.screen.allScreens()
 obj.lastSavedTime = "Never"
@@ -231,6 +232,10 @@ end
 local timerMenu = hs.menubar.new()
 
 function updateMenu()
+    -- Safety Guard: Bail if update is already running from a previous thread block
+    if obj.isMenuUpdating then return end
+    obj.isMenuUpdating = true
+
     if timerMenu then
         local screens = hs.screen.allScreens()
         timerMenu:setTitle(string.format("💠 %d:%02d", math.floor(obj.saveCountdown / 60), obj.saveCountdown % 60))
@@ -257,17 +262,25 @@ function updateMenu()
         end
         timerMenu:setMenu(menuTable)
     end
+
+    obj.isMenuUpdating = false
 end
 
 obj.powerWatcher = hs.caffeinate.watcher.new(function(event)
     if event == hs.caffeinate.watcher.systemWillSleep or event == hs.caffeinate.watcher.screensDidSleep or event == hs.caffeinate.watcher.screensDidLock then
         log("POWER: Sleep event.")
         obj.isTransitioning = true
+        -- Stop both timers entirely so they don't fire or stack requests while suspended
         if obj.autoSaveTimer then obj.autoSaveTimer:stop() end
+        if obj.clockTimer then obj.clockTimer:stop() end
     elseif event == hs.caffeinate.watcher.systemDidWake or event == hs.caffeinate.watcher.screensDidWake or event == hs.caffeinate.watcher.screensDidUnlock then
         log("POWER: Wake event.")
         obj.saveCountdown = obj.saveInterval
+        obj.isMenuUpdating = false -- Explicitly clean guard flag upon waking up
+        
+        -- Safely start timers up only after wakeup initialization
         if obj.autoSaveTimer then obj.autoSaveTimer:start() end
+        if obj.clockTimer then obj.clockTimer:start() end
         if obj.wakeTimer then obj.wakeTimer:stop() end
         
         local currentScreens = #hs.screen.allScreens()
@@ -285,6 +298,7 @@ obj.powerWatcher = hs.caffeinate.watcher.new(function(event)
             obj.isTransitioning = false
             obj.isRestoring = false
             obj.lastScreenCount = currentScreens
+            updateMenu()
         end
     end
 end):start()