feat: Implement skill management functionality

- Added skill scope helpers and CRUD operations for skills in opencodeConfig.ts.
- Introduced API endpoints for skill management in main.tsx and index.js.
- Enhanced server-side logic to support skill discovery, creation, updating, and deletion.
- Implemented supporting file operations for skills, including reading, writing, and deleting files.
- Updated package.json to use the latest version of @opencode-ai/sdk.

packages/ui/src/hooks/useAssistantStatus.ts

@@ -228,6 +228,7 @@ export function useAssistantStatus(): AssistantStatusSnapshot {
             codesearch: 'web code search',
             todowrite: 'updating todos',
             todoread: 'reading todos',
+            skill: 'learning skill',
         };
 
         const WORKING_PHRASES = [