Don't start polling from the GUI for a CLI launch

We can end up missing early computerStateChanged signals.

Fixes #2039

app/gui/main.qml

@@ -51,7 +51,7 @@ ApplicationWindow {
         }
 
         // Display any modal dialogs for configuration warnings
-        if (runConfigChecks) {
+        if (isGuiLaunch) {
             if (SystemProperties.isWow64) {
                 wow64Dialog.open()
             }
@@ -171,24 +171,28 @@ ApplicationWindow {
     }
 
     onVisibleChanged: {
-        // When we become invisible while streaming is going on,
-        // stop polling immediately.
-        if (!visible) {
-            inactivityTimer.stop()
+        // Polling is only managed from the window for a normal GUI launch;
+        // CLI commands (stream/quit/pair) manage it via the ComputerSeeker.
+        if (isGuiLaunch) {
+            // When we become invisible while streaming is going on,
+            // stop polling immediately.
+            if (!visible) {
+                inactivityTimer.stop()
 
-            if (pollingActive) {
-                ComputerManager.stopPollingAsync()
-                pollingActive = false
+                if (pollingActive) {
+                    ComputerManager.stopPollingAsync()
+                    pollingActive = false
+                }
             }
-        }
-        else if (active) {
-            // When we become visible and active again, start polling
-            inactivityTimer.stop()
+            else if (active) {
+                // When we become visible and active again, start polling
+                inactivityTimer.stop()
 
-            // Restart polling if it was stopped
-            if (!pollingActive) {
-                ComputerManager.startPolling()
-                pollingActive = true
+                // Restart polling if it was stopped
+                if (!pollingActive) {
+                    ComputerManager.startPolling()
+                    pollingActive = true
+                }
             }
         }
 
@@ -197,20 +201,24 @@ ApplicationWindow {
     }
 
     onActiveChanged: {
-        if (active) {
-            // Stop the inactivity timer
-            inactivityTimer.stop()
+        // Polling is only managed from the window for a normal GUI launch;
+        // CLI commands (stream/quit/pair) manage it via the ComputerSeeker.
+        if (isGuiLaunch) {
+            if (active) {
+                // Stop the inactivity timer
+                inactivityTimer.stop()
 
-            // Restart polling if it was stopped
-            if (!pollingActive) {
-                ComputerManager.startPolling()
-                pollingActive = true
+                // Restart polling if it was stopped
+                if (!pollingActive) {
+                    ComputerManager.startPolling()
+                    pollingActive = true
+                }
+            }
+            else {
+                // Start the inactivity timer to stop polling
+                // if focus does not return within a few minutes.
+                inactivityTimer.restart()
             }
-        }
-        else {
-            // Start the inactivity timer to stop polling
-            // if focus does not return within a few minutes.
-            inactivityTimer.restart()
         }
 
         // Poll for gamepad input only when the window is in focus

app/main.cpp

@@ -1034,7 +1034,7 @@ int main(int argc, char *argv[])
 
     if (hasGUI) {
         engine.rootContext()->setContextProperty("initialView", initialView);
-        engine.rootContext()->setContextProperty("runConfigChecks", commandLineParserResult == GlobalCommandLineParser::NormalStartRequested);
+        engine.rootContext()->setContextProperty("isGuiLaunch", commandLineParserResult == GlobalCommandLineParser::NormalStartRequested);
 
         // Load the main.qml file
         engine.load(QUrl(QStringLiteral("qrc:/gui/main.qml")));