teernisse bd6d47dd70 feat(bd-3pc): add error boundary and error handling UI ...

- Add ErrorBoundary class component to catch React render errors
- Show fallback UI with error details (stack in dev mode) and recovery buttons
- Add ErrorDisplay component for showing structured McError messages
- Support all McErrorCode types with contextual messages and install guides
- Implement retry/dismiss actions for recoverable errors
- Add 16 comprehensive tests covering both components

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

2026-02-26 10:58:24 -05:00

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