- Remove unused React imports from 51 files across the entire codebase
- Categories fixed:
  * UI Components: Box, CustomRadio, Select, Send, Stop, VertDots, X, icons
  * Main Components: GooseLogo, LoadingGoose, WelcomeView, GooseMessage, etc.
  * Settings Components: Models, Providers, Extensions sections
  * Modal Components: Various configuration and setup modals
  * Utility Files: suspense-loader, toasts

- Changes made:
  * 21 files: Removed simple 'import React from react'
  * 24 files: Converted 'import React, { ... }' to 'import { ... }'
  * 6 files: Removed various React import patterns

- Perfect prediction accuracy: eliminated exactly 51 errors (331 → 280)
- All files use new JSX transform, no functionality impact
- Total progress: 120+ errors eliminated across all phases (400+ → 280)

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