- **build:**`--minify` not working as documented ([9b5c037](https://github.com/vuejs/vitepress/commit/9b5c0377cd3474447c84b2901801287f3caf3d82)), closes [#4523](https://github.com/vuejs/vitepress/issues/4523)
- **build:** deterministic code group ids ([#4565](https://github.com/vuejs/vitepress/issues/4565)) ([b930b8d](https://github.com/vuejs/vitepress/commit/b930b8d5310f1691d8d9f009f45b70122e4ce800))
- **markdown:** include content of all tokens in heading ids ([68dff2a](https://github.com/vuejs/vitepress/commit/68dff2af8547ae70f6622ac826affd76f2f6378e)), closes [#4561](https://github.com/vuejs/vitepress/issues/4561)
- **client:** set correct oldURL and newURL for hashchange ([#4573](https://github.com/vuejs/vitepress/issues/4573)) ([d1f2afd](https://github.com/vuejs/vitepress/commit/d1f2afdf0fbb022f12cc12295723b3b7c7ef5cb1))
- **build:** update to shiki v3 ([#4571](https://github.com/vuejs/vitepress/issues/4571)) ([52c2aa1](https://github.com/vuejs/vitepress/commit/52c2aa178d4b3fa98b863cf28f0ccf6d2aabcd93))
- **build:** use `markdown-it-async`, remove `synckit` ([#4507](https://github.com/vuejs/vitepress/issues/4507)) ([8062235](https://github.com/vuejs/vitepress/commit/80622356f1d648577ee47ee3a44b04bb015ee462))
### BREAKING CHANGES
- markdown-it-async is used instead of markdown-it. If you're using custom content renderer for local search, you'll need to do `await md.renderAsync` instead of `md.render`.
- Internals are modified a bit to better support vite 6 and handle HMR more correctly. For most users this won't need any change on their side.
- shiki is upgraded to v3. There shouldn't be any breaking change but if you see any issue, please report it.