Upgrade to React 19 and integrate shadcn/ui component library#17

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copilot/update-react-shadcn-ui

Commits on Jan 15, 2026

Initial plan
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Initial exploration: understand current codebase structure

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4msar
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Update React to v19 and set up shadcn/ui component library

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Replace custom UI with shadcn components and sonner toasts

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Fix linting issues and improve code quality

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Remove unused notistack dependency and useSnackbar hook

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Add error handling for clipboard API and use variant prop for destructive action

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Replace native prompt with Dialog for opening notes

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Replace native confirm in Home page with AlertDialog for consistency

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4msar
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Improve clipboard error message clarity in save flow

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4msar
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Update README with modern tech stack and improved documentation

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4msar
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