next.js

0e46072e - feat(app-render): add inlineCss: 'shared' mode for safer CSS inlining

feat(app-render): add inlineCss: 'shared' mode for safer CSS inlining Adds a new 'shared' option for the experimental inlineCss config that only inlines root layout CSS while keeping page-specific CSS as <link> tags. This is safer for client-side navigations because: - Root layout CSS is guaranteed to be present on all pages - Page-specific CSS may not be present after navigation - Reduces RSC payload size by not re-sending shared CSS Config options: - `false`: No CSS inlining (default) - `true`: Inline ALL CSS - `'shared'`: Only inline root layout CSS Changes: - Update config types to support 'shared' value - Add rootLayoutCSSPaths tracking in CollectedInlineCss - Implement 'shared' mode logic in render-css-resource.tsx - Add InlineCssConfig enum to Rust/Turbopack config - Fix templates to preserve 'shared' value instead of Boolean() - Add comprehensive tests for 'shared' mode