- Add errorMessage and isLoading states for proper UX feedback
- Add validation for working directory, prompt, host, and connection
- Display error messages in red container below config section
- Handle agent_create_failed status with error display
- Add loading state management during agent creation
- Log warning for image attachments (server API doesn't support yet)
Tested with Playwright MCP:
- Error message "Working directory is required" displays correctly
- Agent creation with valid config succeeds and redirects
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
