main
feat(signatures): add sources, clean secrets, fix duplicates
fix(scripts): add parents=True to mkdir
feat: split jailbreaks.json for CDN (20MB limit)
feat: add Lakera/gandalf-rct dataset (279K+ attacks), dynamic README updates
fix(scripts): correct paths for sentinel-community/signatures + add split step
fix(scripts): make keywords.json and pii.json optional