fix(vm): increase RAM to 8GB and fix Hyprland rule syntax to prevent crashes

- Increase VM memory to 8192MB to avoid OOM kills during session startup.
- Migrate all 'windowrule' to 'windowrulev2' in core configuration.
- Fix 'no_anim' syntax in layer rules.
- Re-enable graphics while keeping serial logs for debugging.

config/nomarchy/default/hypr/apps/walker.conf

@@ -1,2 +1,2 @@
 # Application-specific animation
-layerrule = no_anim on, match:namespace walker
+layerrule = no_anim = true, match:namespace walker