Update README: highlight OpenClaw native conversational experience, remove web/supabase sections, update comparison table

Cleanup: Remove web/supabase, fix langchain imports, improve planner entity-category matching, add TREM2 to target patterns, delay init RAG embeddings

fix: use relative links for README navigation instead of full URL to avoid 404

docs: update README add complete end-to-end workflow for drug discovery, add parallel virtual-screening command

docs: update README with correct full URLs, add AutoDock Vina virtual screening module

Add: automated dataset download scripts, RAG import, KG building, add ddi/ddinter and pgx/pharmgkb skills

Add RAG and Knowledge Graph modules: 1) Literature RAG for private/public literature retrieval 2) KG builder and reasoner 3) Public dataset collection in docs/PUBLIC_LITERATURE_DATASETS.md

Initial commit: DrugClaw v0.2.0 - AI-powered drug discovery assistant with agentic retrieval

Initial commit: OpenClaw Drug v0.1.0 - 药物研发全流程自动化助手