Re-run the back work bookkeeping intake scan

Requires firm owner/admin accounting authority. Re-runs deterministic CSV/XLSX normalization over the program inbox: maps transaction columns, detects date and sign conventions, builds synthetic calendar months, verifies running-balance anchors where possible, flags exact problem rows, and persists a digest-bound evidence package. Exact completed replays and proven same-account completed date overlaps are rejected; non-overlapping later periods remain allowed. When an export cannot prove its account identity and its dates overlap completed Back work, the scan holds that account and returns accountOverlapQuestions; re-post with answers to resolve (different proceeds, same refuses). Omit the body (or answers) to plainly re-scan. ZIP containers are not visible evidence rows. Read-only with respect to the books.