Feature flag the use of `oak_package_metadata` and `oak_sources` in `oak_index`?

Add arch-specific macOS builds

Cross-file symbol resolution

Flaky test: `test_kernel_request_priority_over_idle_tasks`

Flaky test: `test_lsp_completions_global_pipe`

Enable clippy linting in repo

Migrate existing comm tests to protocol-level tests

Flickering when stepping through fallback vdocs

`source()` hook should return last value

In notebook mode, emit HTML widgets as static, embeddable HTML