Fix opacity issues by using a tag to apply the default opacity that can be removed

Fixes #4168

default/hypr/windows.conf

@@ -2,11 +2,14 @@
 # Hyprland 0.53+ syntax
 windowrule = suppress_event maximize, match:class .*
 
-# Just dash of opacity by default
-windowrule = opacity 0.97 0.9, match:class .*
+# Tag all windows for default opacity (apps can override with -default-opacity tag)
+windowrule = tag +default-opacity, match:class .*
 
 # Fix some dragging issues with XWayland
 windowrule = no_focus on, match:class ^$, match:title ^$, match:xwayland 1, match:float 1, match:fullscreen 0, match:pin 0
 
-# App-specific tweaks
+# App-specific tweaks (may remove default-opacity tag)
 source = ~/.local/share/omarchy/default/hypr/apps.conf
+
+# Apply default opacity after apps have had a chance to opt out
+windowrule = opacity 0.97 0.9, match:tag default-opacity