fix: resolve Prettier markdown code block parsing errors

- Fix syntax errors in skills markdown files (.github/skills, .opencode/skills)
- Change typescript to tsx for code blocks with JSX
- Replace ellipsis (...) in array examples with valid syntax
- Separate CSS from TypeScript into distinct code blocks
- Convert JavaScript object examples to valid JSON in docs
- Fix enum definitions with proper comma separation

components/MessageViewer.tsx

@@ -71,7 +71,8 @@ export default function MessageViewer({ messages }: MessageViewerProps) {
               : "No timestamp"}
           </span>
           <span>
-            Last message: {(() => {
+            Last message:{" "}
+            {(() => {
               const lastMessage = messages[messages.length - 1];
               return lastMessage.timestamp
                 ? new Date(lastMessage.timestamp).toLocaleString()