Scaffold-time observability so a shipped product is not blind in prod from day one — error capture (Sentry), request-id structured logging, and /healthz + /readyz endpoints. stack-baseline pins Sentry but nothing wires it; this is the wiring. Loaded by app-scaffolder (bake into the scaffold), infra-provisioner (prod env + probes), and consumed by l3-support (traces) and devops (deploy gate).
Install
npx skills add avelikiy/great_cto --skill observability-baselinenpx skills add avelikiy/great_cto --skill observability-baseline -a claude-code -gnpx skills add avelikiy/great_cto --skill observability-baseline -a codex -ggemini skills install https://github.com/avelikiy/great_cto.git --path skills/observability-baselinegh skill install avelikiy/great_cto observability-baselinegit clone --depth 1 https://github.com/avelikiy/great_cto /tmp/avelikiy__great_cto
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/avelikiy__great_cto/skills/observability-baseline ~/.claude/skills/observability-baseline # Claude Code
cp -R /tmp/avelikiy__great_cto/skills/observability-baseline ~/.agents/skills/observability-baseline # Codex, Cursor, Gemini CLI, Copilot, OpenCode