# Functional Design Plan — Unit: Offerings

Context loaded from `inception/application-design/unit-of-work.md` (unit scope: FR-4..FR-8, all 12 user stories) and `unit-of-work-story-map.md` (story assignment confirmation).

Investigated before drafting questions (not assumed):
- `frontend/src/features/cms/` (the existing Master-module admin UI — `CmsPage.tsx`, `CmsInstanceList.tsx`, `AddCmsInstanceDialog.tsx`, `services/use*.ts`, `schemas/*.ts`) is the closest existing precedent for an admin list+CRUD screen in this codebase — used as the structural template below.
- `frontend/package.json` has **no drag-and-drop library** (no `@dnd-kit/*`, no `react-beautiful-dnd`, nothing matching "dnd"/"sortable"/"drag"). US-08 (drag-and-drop reorder) would be a genuinely new frontend dependency, not something already available — see Vraag 1.

## Uitvoeringschecklist

- [x] Stap A — `business-logic-model.md`: procesflow voor create/update (met featured-exclusiviteit) en de twee reorder-interacties, als Mermaid-diagrammen
- [x] Stap B — `business-rules.md`: gedetailleerde regels als Mermaid-beslisdiagrammen (featured-exclusiviteit, soft-delete-gedrag, reorder-grenzen, validatieregels)
- [x] Stap C — `domain-entities.md`: `Offering`-entiteit met velden, types, en relatie tot de DTO's (publiek vs. admin) als Mermaid-diagram
- [x] Stap D — `frontend-components.md`: componenthiërarchie voor de admin-CRUD-schermen (Mermaid `graph TD`), props/state per component, formuliervalidatie, welke backend-endpoints elk component aanroept
- [x] Stap E — Consistentiecontrole tegen requirements.md, stories.md en application-design/component-methods.md — geen gaten gevonden; FR-8 (referentiecontent) blijft buiten deze unit's codegeneratie (D-5, handmatige invoer door gebruiker)