* 🐛 Migrate openUIApi schema to Zod v4 function syntax
Zod 4 removed z.function().args(), which broke the
plugins-runtime build with implicit-any errors on every
openUIApi parameter and knock-on possibly-null errors on
the modal in plugin-manager.
Declare the inputs with z.function({ input: [...] }) so the
parameter and return types infer again; behavior is unchanged.
Add a regression spec covering delegation, optional args and
rejection of invalid theme and title values.
AI-assisted-by: muse-spark-1.3-contributor
* 📚 Fix deprecated markdown-it-anchor permalink option in docs
Migrate docs Eleventy config to the markdown-it-anchor v10 API.
Replace the deprecated boolean permalink option with
linkInsideHeader, keeping the same symbol and class.
Bump markdown-it-anchor to v10 and related docs deps.
AI-assisted-by: muse-spark-1.3-contributor
* ⬆️ Update deps
* ⬆️ Update base docker images
* 📎 Fix mcp tests
