Document the repository scaffold, architecture updates, and development tooling under Unreleased. Include the requirement to update the changelog for user-visible changes.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Add formatting, lint, and test tasks with Tombi, rustfmt, and Clippy configuration. Require agents to pass the pre-commit task before committing.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Move the updated architecture specification into docs, add the Rune adapter library scaffold, and reserve the planned repository directories.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>