1.9.0 (2026-07-17) Features tools: stack-env ergonomics — summary/hint, remove_stack_env_vars, collision check (#105) (b18d5ca) CI/CD deps: add lockfile-integrity gate (npm ci in node:22-alpine) (#104) (9f0da7c), closes #69 release: drop @semantic-release/git and changelog plugins (#106) (bdecb01)