- Created a new JSON file `_journal.json` to track changes and entries.
- Included metadata such as version, dialect, and a sample entry with breakpoints enabled.
- Updated `SupplierAnalysisResult` to include a `product` field and modified related tests.
- Refactored `addRowsSheet` to accommodate changes in the product structure.
- Enhanced UPC file analysis to utilize a new `toSupplierInputRecord` function for cleaner record creation.
- Introduced new types for supplier input records and product observations.
- Updated frontend components to handle new product details and analysis history.
- Improved database writing functions to streamline run completion and error handling.
- Added new API endpoints for product details and adjusted routing in the frontend.
- Implemented supplier scoring logic in `supplier-scoring.ts` with functions to compute demand score, competition penalty, and overall supplier product score.
- Created unit tests for supplier scoring in `supplier-scoring.test.ts` to validate scoring logic against various scenarios.
- Developed UPC file analysis tool in `upc-file-analysis.ts` to process UPCs in batches, fetch product data from Keepa and SP-API, and generate supplier results.
- Added UPC input reading functionality in `upc-file-reader.ts` to handle XLSX and XLS files, including validation for UPC formats.
- Introduced a command-line tool in `upc-lookup.ts` for looking up UPCs and displaying detailed results or mappings to ASINs.
- Enhanced error handling and logging throughout the new modules for better traceability and user feedback.
