Fix 20+ pre-existing TypeScript errors in the server package using
proper type-safe solutions — no `as any`, `as unknown`, or `any` types.
Key changes:
- Replace R.curry with regular curried arrow functions for proper inference
- Add return types to abstract methods (DynamicFilterRoleAbstractor)
- Add field declarations to empty models (ItemWarehouseQuantity)
- Add index signature to IMetadata for dynamic extra columns
- Use explicit field construction instead of pick()+cast patterns
- Convert moment format strings to Date objects where Date type expected
- Make interface properties optional where payloads don't include them
- Use native Array.reduce with proper typing instead of lodash chain
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
