---
title: "2026-09-01 Histo Factory HistoMap flat prefix review"
description: "Reviewed the minimal Factory change that preserves source HistoMap suffixes below derived preprocessing components."
image: "https://docs.virdx.dev/img/virdx-social-card.png"
---

> Documentation Index
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# 2026-09-01 Histo Factory HistoMap flat prefix review

## Work Done

Reviewed the uncommitted Factory diff against `origin/main` without editing the mono worktree. Verified that a canonical source scan such as `histoscan/PA00001/001` and source map `histomap/PA00001/001/epithelium` produce `histomap/PA00001/001/preprocessed/component_N/epithelium`. Checked multi-segment identifiers and suffixes, searched sibling construction sites, and confirmed the generated foreground map is the only separate component-map identifier path and needs no copied suffix. The final PR manually bumps Factory from 0.2.0 to 0.2.1. `git diff --check origin/main`, focused Ruff lint, and focused Ruff formatting checks passed. Reported no findings.

## Lessons Learned: Pitfalls

The general histo SOPs did not contain Factory identifier grammar and were not needed for this narrow review. Existing inbox recaps were more directly related, but the requested fresh-context review could be completed from the diff and nearby call sites.

## Lessons Learned: Improvements

A short durable note describing the canonical relationship between a source `HistoScan`, its `HistoMap` suffix, and derived preprocessing component identifiers would make future reviews faster if this identifier grammar becomes a recurring maintenance area.

Source: https://docs.virdx.dev/knowledge/inbox/2026-09-01-histo-factory-histomap-flat-prefix-review/index.mdx