fix(ai-toolbar): honor AI state in shortcuts and clipboard dedup

src/components/ai-toolbar.tsx

@@ -310,6 +310,8 @@ export const AIToolbar = ({
 									if (
 										e.key === "Enter" &&
 										(e.metaKey || e.ctrlKey) &&
+										!aiLoading &&
+										canUseAi &&
 										(aiPrompt.trim() || hasImages)
 									) {
 										e.preventDefault();