Refactored key components to use react-i18next translations:
- ErrorBoundary: error messages and labels
- ProgressStepper: step labels
- DimensionCard: health status labels, descriptions, benchmark text, action buttons
- DashboardTabs: back button, footer, default title
Added translation keys to es.json and en.json:
- dashboard.defaultTitle
- All health status and benchmark keys already existed
Build verified successfully. Remaining 31 components to be refactored in subsequent commits.
https://claude.ai/code/session_4f888c33-8937-4db8-8a9d-ddc9ac51a725
