Add a no-animations mode, on by default in VMs (#13550)

A machine without a GPU, like most VMs, renders through llvmpipe on the
CPU, where every animated frame and every translucent window costs. In a
VM, opening and closing a terminal took ~5s of CPU; a panel ~3.4s.

omarchy toggle animations (also under Toggle > Animations) places a Hyprland
flag that turns off animations, blur and shadows and makes windows opaque.
The shell follows Hyprland's animations:enabled, rereading it on every
config reload: its one-shot animations run for Style.duration(ms), which
is then 0, and its spinners, pulses and title marquee hold still. A new
install in a VM starts with the flag in place.

Measured in the ISO test VM (llvmpipe), CPU per interaction:
terminal open+close 5000ms -> 481ms, workspace switch 1670ms -> 409ms,
audio panel 3446ms -> 796ms, volume OSD 2324ms -> 584ms, menu 2028ms ->
1241ms.

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

bin/omarchy-hw-vm

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+# omarchy:summary=Returns true when running in a virtual machine.
+
+systemd-detect-virt --vm --quiet

bin/omarchy-toggle-animations

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+# omarchy:summary=Toggle animations, transparency and other effects that are slow without a GPU
+# omarchy:args=[toggle|on|off]
+# omarchy:examples=omarchy toggle animations | omarchy toggle animations off | omarchy toggle animations on
+
+# The flag records animations being off, so on and off swap on the way through.
+case ${1:-toggle} in
+toggle) omarchy-hyprland-toggle no-animations toggle ;;
+on) omarchy-hyprland-toggle no-animations off ;;
+off) omarchy-hyprland-toggle no-animations on ;;
+*)
+  echo "Usage: omarchy-toggle-animations [toggle|on|off]" >&2
+  exit 1
+  ;;
+esac
+
+if omarchy-hyprland-toggle-enabled no-animations; then
+  omarchy-notification-send -g 󰕟 "Animations disabled"
+else
+  omarchy-notification-send -g 󰕟 "Animations enabled"
+fi