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>

default/hypr/toggles/no-animations.lua

@@ -0,0 +1,20 @@
+-- Draw nothing just for show, for machines that render on the CPU, like a VM:
+-- no animations, blur or shadows, and opaque windows, so nothing behind a
+-- window has to be blended into it.
+hl.config({
+  animations = {
+    enabled = false,
+  },
+
+  decoration = {
+    blur = {
+      enabled = false,
+    },
+
+    shadow = {
+      enabled = false,
+    },
+  },
+})
+
+o.window(".*", { opacity = "1 1" })

default/omarchy/omarchy-menu.jsonc

@@ -97,6 +97,7 @@
   "trigger.toggle.battery-percentage": {"icon":"󰁹","label":"Battery Percentage","when":"omarchy-hw-laptop","action":"omarchy-shell omarchy.power togglePercentage"},
   "trigger.toggle.workspace-layout": {"icon":"󱂬","label":"Workspace Layout","action":"omarchy-hyprland-workspace-layout-toggle"},
   "trigger.toggle.window-gaps": {"icon":"","label":"Window Gaps","action":"omarchy-hyprland-window-gaps-toggle"},
+  "trigger.toggle.animations": {"icon":"󰕟","label":"Animations","action":"omarchy-toggle-animations"},
   "trigger.toggle.one-window-ratio": {"icon":"","label":"1-Window Ratio","action":"omarchy-hyprland-window-single-square-aspect-toggle"},
   "trigger.tests.network-speedtest": {"icon":"󰓅","label":"Network Speed Test","action":"omarchy-shell shell summon omarchy.speedtest"},
   "trigger.tests.disk-speedtest": {"icon":"󰋊","label":"Disk Speed Test","action":"omarchy-shell shell summon omarchy.disk-speedtest"},