Resync with Snapshot 2026.09: per-remedy repair sources (60 repair_procedures rows, 10 joined rows)

Card: correct the provenance claim (manufacturer pages and independent repair references)

Update Kaggle links to the new username (old URLs 404)

chore(pricing): Snapshot repriced to $99 (licence + packaged builds; same rows as the sample)

Link the full dataset: portal, price and buy link

docs: shopfront moved to dataengineered.io

Add ApplianceDB sample (5 CSVs + parquet, dataset card, viewer configs) mirrored from Kaggle

initial commit