Use Omarchy command helpers consistently

test/shell.d/bin-style-test.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -euo pipefail
+
+source "$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)/base-test.sh"
+
+raw_command_checks=$(rg -l 'command -v' "$ROOT/bin" \
+  | rg -v '/omarchy-(cmd-|pkg-|upgrade-to-quattro)' || true)
+[[ -z $raw_command_checks ]] || fail "bin commands use command helpers" "$raw_command_checks"
+pass "bin commands use command helpers"
+
+raw_notifications=$(rg -l -P '^[[:space:]]*[^#[:space:]].*\bnotify-send\b' "$ROOT/bin" \
+  | rg -v '/omarchy-notification-send$' || true)
+[[ -z $raw_notifications ]] || fail "bin commands use the notification helper" "$raw_notifications"
+pass "bin commands use the notification helper"