yash-rs

Apply the yash-rs versioning rules: bump affected crate versions, sync the root Cargo.toml, and add Unreleased changelog headings, per the PR template. Documentation updates are out of scope (see the update-docs skill).

Update the mdBook user documentation under docs/src in yash-rs. Use when a behavior or feature change needs corresponding documentation edits, or when adding, revising, or correcting existing documentation pages.

Update crate CHANGELOG.md files in yash-rs. Use for adding unreleased entries, deciding changelog categories, and keeping changelogs aligned with crate and workspace version changes.

Draft informative commit messages from repository changes. Use when writing a git commit message, summarizing staged edits, or turning a diff into a clear subject and body.