b32145fb58
Documentation: - Fix CI badge href to /actions (was 404 on Gitea) - Add UPTOP_METRICS_PUBLIC + UPTOP_MAINT_RETENTION to README env table - Link maintenance retention to env var name in data retention section - Note metrics auth requirement in features list - Fix clustering.md: fail-closed wording, mark AGG_STRATEGY/NODE_REGION optional - Fix .env.example: wording (no .env loader), add TRUSTED_PROXIES + MAINT_RETENTION - Add CLI help/usage with subcommand listing, accept serve/help/-h/-version Docker/deploy: - Add EXPOSE 8080 to Dockerfile - Remove dead LIPGLOSS_RENDERER_HAS_DARK_BACKGROUND env - Exempt /api/health from cluster auth (fixes Docker HEALTHCHECK 401) - Add sysctls for unprivileged ping to all compose files Cosmetic: - Fix bug_report.yaml: SemVer placeholder, remove nonexistent serve subcommand