Add all 4 tiers

Fix pricing to match: 100 one-time + 50/hr

Revert pricing to original

Fix pricing: one-time source, /hour hands-on

Add explicit dataset configs to fix schema mismatch

Fix model link: point to champion in dataset

Update model link: point to champion in dataset, remove public repo link

Remove money-back guarantee

Add data configs with LFS for large files

Update to final 3-tier pricing

Fix pricing consistency and clone URLs

Update GitHub Sponsors link

Update dataset card and ignore rules