---
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
state_hub_workstream_id: "c0d28886-e02f-4df2-abb6-ebe179171c94"
---

# 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
state_hub_task_id: "bf1d2a2f-41b4-44b5-b1d1-4f0eec5fbf59"
```
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
state_hub_task_id: "66320911-a4b2-404f-b025-8b23dc0c9680"
```
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
state_hub_task_id: "266d168c-d93e-4387-9527-70aa0d5b2a6b"
```
Add fixture-driven contract tests mirroring the PDF suite; decide fixture
ownership per ADR-0002.