fix: add missing altimate_change marker in dialog-skill.tsx (#341)

Marker Guard CI failed because `useToast()` was added to the
upstream-shared `DialogSkill` function without altimate_change markers.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: anandgupta42

packages/opencode/src/cli/cmd/tui/component/dialog-skill.tsx

@@ -350,7 +350,9 @@ function DialogSkillInstall() {
 export function DialogSkill(props: DialogSkillProps) {
   const dialog = useDialog()
   const sdk = useSDK()
+  // altimate_change start — toast for action feedback
   const toast = useToast()
+  // altimate_change end
   dialog.setSize("large")
 
   const [skills, { refetch }] = createResource(async () => {