Update GitHub Actions workflows to latest action versions and improve pnpm usage by introducing per-package workspace configs. Add docs-site/pnpm-workspace.yaml and update Dockerfile/package.json for better monorepo support. Upgrade dependencies across main and docs-site packages for compatibility and security. Refine TypeScript types and hooks for improved type safety and maintainability.
Add support for building and publishing multi-architecture Docker images (amd64 and arm64) using a matrix strategy. Introduce a new 'prepare' job for metadata computation and a 'merge' job for creating manifest lists. Enable manual workflow dispatch with optional latest tagging. Improve caching and provenance handling for better efficiency and reliability.
