[ ] File pages show the content split into sections for non-JS users
[ ] File pages show the content split into tabs for JS users, without a FOUC
[ ] First tab, labelled "File information", shows the captions block display/editor and the wikitext block
[ ] Second tab, labelled "Structured data", shows the statements block display/editor –
[ ] No H1 heading any more
The file interaction block and the "what is metadata" information panel in the illustration are both out of scope.