fix: resolve import path issues and dependency conflicts

[jayakumaar]

This PR addresses several import and dependency related issues:

Changes made:

• Fixed Vite configuration syntax for path aliasing in vite.config.ts
• Updated package dependencies to resolve conflicts
• Cleaned up React imports in WelcomeScreen component
• Fixed duplicate imports in App.tsx
• Consistently using @/components/... import paths

Testing:

• Verified that the development server starts without import errors
• Confirmed that components load correctly with aliased paths
• Package installation completes without peer dependency warnings

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