Noves-Inc/canton-data-app: docs/authentication/verify.md

# Verify authentication Before starting the Noves Data App, request another M2M indexing token and confirm its exact, case-sensitive `sub` still matches the Canton user. After installation, verify the backend: ```bash curl -fsS http://127.0.0.1:8090/ready curl -fsS http://127.0.0.1:8090/api/v2/captu