Create generate-log-config.sh that maps a single LOG_LEVEL env var to
per-container settings for Backend, Frontend, PostgreSQL, Redis, and
Traefik. Script validates input and generates .env.logging file.
Integrate script into staging and production CI/CD pipelines.
Remove obsolete SPRINTS.md calendar file.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
