`actions/setup-dotnet@v5` supports `cache: true` but no workflow uses it. Every CI run re-downloads packages. ## Acceptance criteria - [ ] `cache: true` and `cache-dependency-path` set on every `setup-dotnet` step in `ci-cd.yml`, `codeql.yml`, `docs.yml` - [ ] Cache hits visible on the second run after merge
actions/setup-dotnet@v5supportscache: truebut no workflow uses it. Every CI run re-downloads packages.Acceptance criteria
cache: trueandcache-dependency-pathset on everysetup-dotnetstep inci-cd.yml,codeql.yml,docs.yml