Fix Heroku deployment: separate production TypeScript config

[TonyCasey]

• Create tsconfig.prod.json for production builds without Jest types
• Update build script to use production config
• Excludes all test files and mock directories from production build
• Fixes "Cannot find type definition file for 'jest'" error on Heroku

The production config extends the base tsconfig but overrides the types array to exclude Jest, which is only in devDependencies.

🤖 Generated with Claude Code

Pull Request

📋 Description

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🚀 Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• UI/UX improvement
• Performance optimization
• Test improvement

🧪 Testing

• Tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged

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🔍 Code Review Checklist

• Code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• Any dependent changes have been merged and published

🚀 Deployment Notes

• Frontend changes require Vercel deployment
• Backend changes require Heroku deployment
• Environment variables need to be updated
• Database migrations required
• No deployment required

📈 Performance Impact

• No performance impact
• Improved performance
• Potential performance impact (explain below)

🔗 Related Issues

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📝 Additional Notes

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Project	Deployment	Preview	Comments	Updated (UTC)
frontend	Ready	Preview	Comment	Aug 18, 2025 4:48pm