Merge dev into main

backend/app/crud.py

backend/app/main.py

backend/app/models.py

backend/app/schemas.py

configs/ssl.cnf

frontend/package.json

frontend/pnpm-lock.yaml

frontend/src/lang/en.json

frontend/src/lang/fr.json

frontend/src/lib/api/sessions.ts

frontend/src/lib/api/survey.ts

frontend/src/lib/components/sessions/message.svelte

frontend/src/lib/components/surveys/consent.svelte

frontend/src/lib/components/surveys/dropdown.svelte

frontend/src/lib/types/feedback.ts

frontend/src/lib/types/message.ts

frontend/src/lib/types/session.ts

frontend/src/routes/register/+page.svelte

frontend/src/routes/tests/[id]/+page.svelte

scripts/surveys/groups.csv