Released: 2026-10-24

### Breaking Changes

- Remove the `@takazudo/zudo-doc/plugins/optional-peers` export. Remove any explicit registration of that workaround plugin; ZFB now handles rejection-handled optional imports directly.
- Require ZFB 5.0.1 or later in the 5.x line. Upgrade the ZFB engine, runtime, and Markdown WASM packages together. When using document history, upgrade `@takazudo/zudo-doc-history-server` to 8.x as well. Node.js 24 remains the minimum.

### Features

- Add `siteTreeNavInitiallyCollapsed` to start exact nested category slugs collapsed in home-page and MDX site trees while preserving links and toggles. (fb4a6e3cf)

### Bug Fixes

- Adopt ZFB 5.0.1 to fix lazy island chunks requesting an unpublished `islands.js` asset.
- Restore prose spacing inside tab panels. (5c2f52b92)
- Clarify adjacent heading spacing and heading hierarchy across theme packs. (2969bd803)

### Other Changes

- Accept Node.js 24 or later without an upper version cap. Node 24 LTS remains the CI-verified line. (d5336a24b)
- Update the MCP SDK to 1.32.2.