skills

Diagnose and fix failing CircleCI builds quickly and safely. Use when users ask to investigate failed CircleCI jobs, triage flaky pipelines, identify root causes from logs, and implement minimal fixes in configuration, test setup, or build-related code paths.

Optimize CircleCI configuration for speed, reliability, and maintainability. Use when users ask to improve `.circleci/config.yml`, reduce CI runtime, tune caching/workspaces/parallelism, remove pipeline waste, or fix flaky pipeline behavior caused by configuration choices.

Onboard onto CircleCI Smarter Testing (testsuite) with `.circleci/test-suites.yml`, config wiring, `circleci run testsuite`, and `--doctor` until checks pass. Use for Smarter Testing, testsuite, test-suites YAML, test impact analysis, dynamic test splitting, auto rerun failed tests, or migrating raw test commands.