- Create data/ikea-catalog.json with 41 curated IKEA items across 23 series
(KALLAX, BILLY, MALM, PAX, HEMNES, LACK, etc.) with verified dimensions
- Add source tabs (All/Standard/IKEA) to catalog panel for filtering
- Add IKEA series filter bar when viewing IKEA items
- Add IKEA badge and series label on item cards
- Add mergeCatalog() to renderer for loading additional catalog files
- Add scripts/import-ikea-hf.js for importing from HuggingFace dataset
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