Implement full support for the request_user_input tool with both Web UI and CLI
components. This includes:
- New view and footer components for request_user_input tool UI
- Tool registration in knownTools and view registries
- Nested answer format support (Record<string, { answers: string[] }>)
- Backward compatibility with flat answer format (Record<string, string[]>)
- Permission handler updates for CLI request_user_input acceptance
- Type definitions and schema updates across shared/cli/server/web packages
- Translation strings for request_user_input UI elements
- Conditional footer rendering in ToolCard for question tools
- Replace .passthrough() with explicit field definitions across all schemas
- Add missing optional fields (homeDir, happyHomeDir, happyLibDir, displayName)
- Refactor RawJSONLinesSchema to use structured base schema for clarity
- Improve schema validation strictness and type safety
- Update Machine interface to reflect explicit fields instead of index signature
Implement a visibility-aware notification system that delivers toast messages via SSE to visible browser tabs instead of sending push notifications, reducing unnecessary push requests. Includes VisibilityTracker for monitoring connection visibility, toast UI components, and enhanced SSEManager with toast delivery capability.