Replace the single CatalogMaterialDto + CatalogDimensionsDto (bag of nullable
fields) with per-shape DTOs that have strongly-typed dimension properties.
Catalog JSON now groups materials by shape key instead of a flat array.
Delete the old SeedController/SeedDataDtos (superseded by CatalogService).
Scraper updated to emit the new grouped format, resume by default, and
save items incrementally.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Switch MaterialDimensions inheritance from TPH (single table with discriminator)
to TPC (table per concrete type) with individual tables per shape. Add Swagger
for dev API exploration, expand SeedController with export/import endpoints and
Alro catalog JSON dataset, and include Python scraper for Alro catalog PDFs.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
