Extract the speed test into its own omarchy.speedtest panel plugin

The network panel now summons it, so a clone or a third-party plugin
declaring clonedFrom: omarchy.speedtest can replace the whole speed
test -- dials and run orchestration alike -- for every caller.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

default/omarchy/omarchy-menu.jsonc

@@ -118,7 +118,7 @@
   "setup.network.dns.google": {"icon":"󰊭","label":"Google","checked":"[[ \"$(omarchy-dns)\" == \"Google\" ]]","action":"omarchy-dns Google"},
   "setup.network.dns.custom": {"icon":"","label":"Custom","checked":"[[ \"$(omarchy-dns)\" == \"Custom\" ]]","action":"omarchy-launch-floating-terminal-with-presentation 'omarchy-dns Custom'"},
   "setup.network.qr": {"icon":"󰐲","label":"QR Code","aliases":["wifi-qr"],"when":"[[ $(omarchy-network-status) == wifi* ]]","action":"omarchy-shell omarchy.network showQr"},
-  "setup.network.speedtest": {"icon":"󰓅","label":"Speed Test","aliases":["speedtest","speed-test"],"action":"omarchy-shell omarchy.network speedTest"},
+  "setup.network.speedtest": {"icon":"󰓅","label":"Speed Test","aliases":["speedtest","speed-test"],"action":"omarchy-shell shell summon omarchy.speedtest"},
   "setup.default": {"icon":"","label":"Defaults","aliases":["default","defaults"]},
   "setup.default.agent": {"icon":"󰚩","label":"Agent"},
   "setup.default.agent.claude": {"icon":"󰛄","label":"Claude","checked":"[[ \"$(omarchy-default-agent)\" == \"claude\" ]]","action":"omarchy-default-agent claude"},