Merge branch 'dev' into 'main'

backend/.gitignore

backend/app/crud.py

backend/app/main.py

backend/app/models.py

backend/app/schemas.py

frontend/global.d.ts

frontend/package-lock.json

frontend/package.json

frontend/pnpm-lock.yaml

frontend/src/app.css

frontend/src/app.d.ts

frontend/src/hooks.server.ts

frontend/src/lang/en.json

frontend/src/lang/fr.json

frontend/src/lib/api/apiInstance.ts

frontend/src/lib/api/auth.ts

frontend/src/lib/api/sessions.ts

frontend/src/lib/api/survey.ts

frontend/src/lib/api/tests.ts

frontend/src/lib/api/users.ts