Route the weather toggle through the shell target too

Weather wraps its panel in a BarWidget that only exposed togglePanel(),
so it couldn't ride the new shell-routed hotkey path and was left on the
stale-prone per-plugin target. Expose open/close/opened on the wrapper
(open maps to the panel's hotkey path so the center hover reveal stays
suppressed) and switch omarchy-notification-weather to the new syntax.

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

bin/omarchy-notification-weather

@@ -2,4 +2,4 @@
 
 # omarchy:summary=Toggle the current weather panel
 
-omarchy-shell omarchy.weather toggle
+omarchy-shell shell toggle omarchy.weather