AI coding has made CI a bottleneck, so we reworked ours to keep up

Linear reworked its CI pipeline, moving from GitHub Actions to faster third‑party runners and adopting the native tsgo compiler, cutting pull‑request wait time from over six minutes to about five and halving runner time per test. The post includes before‑and‑after metrics showing a 34% speed gain and a 73% reduction in type‑checking time.