---
id: ESRC-WP-0002
type: workplan
title: "HTML and Markdown source representations"
domain: infotech
repo: evidence-source
status: proposed
owner: codex
topic_slug: citation_evidence_mvp
created: "2026-07-08"
updated: "2026-07-08"
spec_refs:
  - README.md
  - docs/ADR-0001-extraction-boundary.md
  - ../citation-engine/src/shared/document.ts
---

# ESRC-WP-0002 — HTML and Markdown source representations

The PDF slice (ESRC-WP-0001) established the ingest boundary and contract shape.
This workplan extends ingest to HTML and Markdown sources, producing the same
`{ document, representation }` pair over engine-owned contracts.

## Open questions

- Which `representationType` values do HTML/MD map to, and do they need new
  `DocumentRepresentation` fields in `citation-engine`?
- How is canonical text + offset map derived for reflowable formats that have
  no fixed pages? (Page map may be empty or synthetic.)

## Sketch

```task
id: ESRC-WP-0002-T01
status: todo
priority: medium
```
Define the HTML/MD representation contract with `citation-engine`; agree
`representationType` and any offset/page semantics for pageless formats.

```task
id: ESRC-WP-0002-T02
status: todo
priority: medium
```
Implement `ingestHtml` / `ingestMarkdown` in `src/html/` and `src/markdown/`,
reusing `fingerprintBytes` and the canonical-text normalizer.

```task
id: ESRC-WP-0002-T03
status: todo
priority: medium
```
Add fixture-driven contract tests mirroring the PDF suite; decide fixture
ownership per ADR-0002.