quickshell: trace compositor events while a panel is open

The Battle.net window rule didn't fix the launcher dying on open, so log
Hyprland's own event stream between `launcher toggle -> open` and
`focusgrab cleared` to see what actually takes focus. Gated on a panel
being open. Diagnostic — remove once the cause is known.

settings/quickshell.nix

@@ -2956,6 +2956,21 @@ in
                     }
                 }
 
+                // Diagnostic for the "launcher opens and dies in the same frame
+                // while Battle.net runs" bug. Gated on a panel actually being
+                // open, so this is a handful of lines around each Super+R rather
+                // than a firehose — the whole point is to see which compositor
+                // event lands between `launcher toggle -> open` and `focusgrab
+                // cleared`. Read with `journalctl --user -u quickshell -f -o
+                // short-precise`; second resolution is too coarse here.
+                Connections {
+                    target: Hyprland
+                    function onRawEvent(event) {
+                        if (launcherPanel.open || bar.activeDropdown !== null)
+                            console.log("hypr event: " + event.name + " | " + event.data);
+                    }
+                }
+
                 property var activeDropdown: null
 
                 // Set by the screenshot keybind (via IPC) to hold menus open