By: Lucien Huber <im@lcnbr.ch>
reuse compiler artifacts and align doctest preparation Consolidated original changes: fa1565a78, 2cffab797, 2e09d567f. User request: can we squash/consolidate simplify-spenso-api into the functionality based commits. Also is any dependency not on crates now? include the fixes in `codex/ci-dummy-source-combined` update with jj