Problem: CI only tests the default feature set. The codebase defines
multiple Cargo features (hardware, browser-native, sandbox-landlock,
sandbox-bubblewrap, probe, rag-pdf) behind conditional compilation.
Feature-gated code can silently break without CI coverage.
Solution: Add a dedicated feature-matrix workflow that tests key
feature combinations in a matrix strategy:
- --no-default-features (bare minimum compiles)
- --all-features (everything together)
- --no-default-features --features hardware (isolated hardware)
- --no-default-features --features browser-native (isolated browser)
Each combination runs both cargo check and cargo test. The
workflow triggers on Cargo.toml/lock/src changes and weekly schedule.
Testing: Validated YAML syntax and matrix expansion logic. Actual
feature compilation will be verified by CI on first run.
Ref: zeroclaw-labs/zeroclaw#618 (item 2 — Feature Matrix Testing)
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
