Refactor FestipodDataContext to use only the useShape ORM API:
- Remove ng.sparql_update, sessionPromise, ensureGraphNuri imports
- Use privateNuri (useShape scope) directly as @graph for adds
- Create/join are now synchronous (no async wrapper needed)
- Leave uses ngSet.delete() — known limitation: doesn't persist (@wip)
Add event lifecycle e2e scenarios (cycle-de-vie-evenement.feature):
- Create event via form and verify on home screen
- Created event persists after reconnexion
- Consult event detail from home
- Join an event
- Modify event location and verify
- Leave + persistence tagged @wip (ngSet.delete doesn't persist)
Fix DemoMode external navigation: sync initialScreenId prop changes
to internal state via useEffect (was ignored after first mount).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Sylvain Duchesne
7099c817db