The shared-nestjs-cors package was exporting raw TypeScript files, which caused
runtime errors in production Docker containers:
SyntaxError: Unexpected token 'export'
Changes:
- Add build script to compile TypeScript to JavaScript
- Update package.json to export compiled dist files instead of src
- Add build step to all backend Dockerfiles that use this package
- Package now builds to CommonJS in dist/ folder
Fixes staging deployment failures for mana-core-auth and other backends.
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Co-Authored-By: Claude <noreply@anthropic.com>