---
id: IB-WP-0007
type: workplan
title: "Entity And Relation Model Migration"
domain: markitect
repo: infospace-bench
status: completed
owner: markitect
topic_slug: markitect
created: "2026-05-14"
updated: "2026-05-14"
state_hub_workstream_slug: "ib-wp-0007-entity-relation-model-migration"
state_hub_workstream_id: "3f6f17c9-bf50-4297-9bd5-cbe1e33efa76"
---

# IB-WP-0007 — Entity And Relation Model Migration

## Goal

Reintroduce the old infospace entity and relation semantics as
application-level models on top of `markitect-tool` parsing.

## Tasks

### T01 — Define entity model

```task
id: IB-WP-0007-T01
status: done
priority: high
state_hub_task_id: "d6c401be-ada6-4684-9186-8ae35101bfa8"
```

- Reimplement the useful `EntityMeta` fields from `markitect-project`
- Keep source provenance and artifact ID linkage explicit
- Add fixtures from a small legacy-style entity document

### T02 — Parse entities from artifacts

```task
id: IB-WP-0007-T02
status: done
priority: high
state_hub_task_id: "25e42321-33fe-4b84-8e95-c5308d91ad3b"
```

- Parse entity documents via `markitect-tool` sections
- Extract title, definition, context, domain, source grounding, and section slugs
- Return structured diagnostics for missing required sections

### T03 — Define and parse relation model

```task
id: IB-WP-0007-T03
status: done
priority: high
state_hub_task_id: "845a8ea0-50d8-4dd3-8cc3-23717195ae6f"
```

- Reimplement relation triplet concepts: subject, predicate, object, relation
  type, evidence, feedback role
- Link relation endpoints to artifact/entity IDs
- Add tests for relation parsing and endpoint validation

### T04 — Manifest integration

```task
id: IB-WP-0007-T04
status: done
priority: medium
state_hub_task_id: "155028a2-4df7-4144-9193-74e95f6e51b1"
```

- Decide how entity and relation artifacts appear in `artifacts/index.yaml`
- Support listing entities and relations from an infospace
- Document the application-level model

## Acceptance

- Legacy-style entity and relation fixtures parse successfully
- Missing required sections fail visibly
- `infospace-bench` owns semantics while `markitect-tool` owns Markdown structure