- sccache: compiler caching for test builds (11-14% faster compilation)
- mold: faster linker on Linux builds
- cargo-nextest: parallel test runner (up to 35-60% faster tests)
- CARGO_INCREMENTAL=0: disable incremental compilation overhead in CI
Allowlist impact: added mozilla-actions/sccache-action@*
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Auto CI on PRs builds linux x86_64 and macOS arm64 only.
Remaining targets (linux arm64, macOS x86, Windows) available via
manual workflow_dispatch in ci-full.yml.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>