docs(operations): land the heal/scanner MinIO audit baseline with closure results Move the comprehensive heal/scanner vs MinIO analysis (2026-08-16) into docs/operations/ so it finally enters the tree — the docs/ root is ignored by the gitignore whitelist, which is why the baseline the audit issue referenced as "to be merged with a PR" never landed. Append §9 closure results: all 14 backlog sub-issues (#1865-#1878) closed with the per-item PR map, two further misjudgment corrections (HS-17 was already implemented; HS-14's MinIO idle semantics drifted upstream), HS-12/HS-18 audit conclusions, and the registered follow-ups. Backlog issue: rustfs/backlog#1862 Co-authored-by: heihutu <[email protected]>