[#SIRH-6] Faire une doc de type wiki (#14)

| Numéro du ticket | Titre du ticket |
|------------------|-----------------|
|                  |                 |

## Description de la PR

## Modification du .env

## Check list

- [ ] Pas de régression
- [ ] TU/TI/TF rédigée
- [ ] TU/TI/TF OK
- [ ] CHANGELOG modifié

Reviewed-on: #14
Co-authored-by: tristan <tristan@yuno.malio.fr>
Co-committed-by: tristan <tristan@yuno.malio.fr>

CLAUDE.md

@@ -2,6 +2,7 @@
 
 ## Mandatory Rules
 - Any functional change MUST update `doc/` in the same intervention
+- Any functional change MUST update the in-app documentation (`frontend/data/documentation-content.ts`) in the same intervention
 - At the end of every feature addition or functional modification, update this CLAUDE.md to reflect new patterns, rules, or conventions introduced
 
 ## Commands
@@ -84,6 +85,16 @@
 - Keep backend PHP DTOs aligned with frontend TS DTOs (`frontend/services/dto/*`)
 - Update unit tests when constructor/service signatures change
 
+## In-App Documentation
+- Content: `frontend/data/documentation-content.ts` — structured TypeScript data with all user-facing documentation
+- Types: `frontend/types/documentation.ts` — DocSection, DocArticle, DocBlock
+- Composable: `frontend/composables/useDocumentation.ts` — role-based filtering (employee < site_manager < admin)
+- Components: `frontend/components/documentation/` — DocumentationPage, DocumentationSection, DocumentationArticle
+- Page: `frontend/pages/documentation.vue`
+- 3 access levels: `employee` (ROLE_SELF), `site_manager` (ROLE_USER), `admin` (ROLE_ADMIN) — cumulative (admin sees everything)
+- Each section/article has a `requiredLevel` that controls visibility
+- When adding or modifying a feature, update the corresponding section in `documentation-content.ts`
+
 ## Language
 - UI is in French
 - User communicates in French