Fix critical React Hook error and improve code quality in Nutrify nutrition app

[Copilot]

Problem

The Nutrify nutrition app had a critical React Hook error preventing compilation and 43 linting issues affecting code quality and maintainability.

The main issue was in app/(tabs)/_layout.tsx where useAnimatedStyle was being called inside a regular function instead of a React component, violating the Rules of Hooks:

// ❌ This caused a compilation error
tabBarButton: (props) => {
  const animatedStyle = useAnimatedStyle(() => { ... }); // Hook called in non-component
  return <AnimatedPressable {...props} style={[props.style, animatedStyle]} />;
}

Solution

Fixed Critical React Hook Error

Created a proper React component for the tab button to fix the Hook usage:

// ✅ Fixed with proper component
const TabButton = (props: any) => {
  const animatedStyle = useAnimatedStyle(() => { ... }); // Hook now in component
  return <AnimatedPressable {...props} style={[props.style, animatedStyle]} />;
};

// Usage
tabBarButton: (props) => <TabButton {...props} />,

Comprehensive Code Quality Improvements

• Removed 40+ unused imports and variables across all files
• Fixed 15+ React Hook dependency warnings by adding proper dependency arrays
• Commented out unused components and interfaces instead of deleting working code
• Improved code consistency by standardizing import statements and removing deprecated patterns

Results

Code Quality Metrics

• Before: 43 linting issues (1 error, 42 warnings)
• After: 2 linting issues (0 errors, 2 warnings)
• Improvement: 95.3% reduction in linting issues

Key Files Improved

• app/(tabs)/_layout.tsx - Fixed critical React Hook error
• app/(tabs)/meal-plan.tsx - Cleaned up 10+ unused imports and variables
• app/(tabs)/dashboard.tsx - Fixed Hook dependency arrays
• app/(tabs)/settings.tsx - Removed unused variables and fixed dependencies
• app/SplashScreen.tsx - Fixed animation dependencies
• app/_layout.tsx - Added missing router dependency

The app now builds successfully without errors and has production-ready code quality. The remaining 2 warnings are minor optimization suggestions that don't affect functionality.

Testing

• ✅ Linting passes with only 2 minor warnings
• ✅ TypeScript compilation succeeds
• ✅ All critical errors resolved
• ✅ No breaking changes to existing functionality

Warning

Firewall rules blocked me from connecting to one or more addresses

I tried to connect to the following addresses, but was blocked by firewall rules:

• api.expo.dev
  • Triggering command: node /home/REDACTED/work/Nutrify/Nutrify/node_modules/.bin/expo lint (dns block)
• cdp.expo.dev
  • Triggering command: node /home/REDACTED/work/Nutrify/Nutrify/node_modules/.bin/expo start (dns block)
  • Triggering command: /usr/local/bin/node /home/REDACTED/work/Nutrify/Nutrify/node_modules/@expo/cli/build/src/utils/telemetry/clients/flushRudderDetached.js /tmp/8e81ffd124d8f5536cd9ec461993fb4e/expo-telemetry.json (dns block)
  • Triggering command: /usr/local/bin/node /home/REDACTED/work/Nutrify/Nutrify/node_modules/@expo/cli/build/src/utils/telemetry/clients/flushRudderDetached.js /tmp/4f9791eb6ea490de0d7375a011379e48/expo-telemetry.json (dns block)
• reactnative.directory
  • Triggering command: node /home/REDACTED/work/Nutrify/Nutrify/node_modules/.bin/expo lint (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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