demo: BOTH sample -> valid qty change (r_082) to showcase Slack approval (HITL) + RAG

demo: rename QA sample company to fictional (Meridian Trading)

demo: format sample emails (paragraphs + named signatures)

demo: faster default samples (QA cited / ACTION blocked-no-stock / BOTH blocked-qty+RAG)

deploy: SAP ERP AI Agent (HF Spaces docker)